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Causes of Barber's rash

List of causes of Barber's rash

Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Barber's rash) that could possibly cause Barber's rash includes:

• Staphylococcus aureus

Barber's rash Causes: Book Excerpts

• Differential Diagnosis - Pruritis without Rash
• Differential Diagnosis - Pruritis with Rash
• Differential Diagnosis - Scalp Rash
• Medical causes - Papular rash
• Medical causes - Papular rash
• Differential Overview - Scaling Rash
• Medical causes - Papular rash
• Medical causes - Papular rash
• I. Differential Diagnosis - Rash - Case 9-2 7-Week-Old Girl

Related information on causes of Barber's rash:

As with all medical conditions, there may be many causal factors. Further relevant information on causes of Barber's rash may be found in:

• Risk factors for Barber's rash
• Hidden causes of Barber's rash

Causes of Barber's rash: Online Medical Books

16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the causes of Barber's rash.

Pruritis without Rash: Differential Diagnosis
(In a Page: Signs and Symptoms)

• Hepatobiliary disorders
  –Cholestasis of pregnancy: Pruritus is most severe in third trimester, ceases after delivery
  –Primary biliary cirrhosis: Increased anti-mitochondrial antibodies
  –Biliary obstruction: Pruritus not a presenting symptom
• Endocrine disorders
  –Hypo- and hyperthyroidism

• Hematopoietic disorders
  –Polycythemia vera: Pruritus classic after emerging from bath, described as severe and prickling
  –Hodgkin's lymphoma: Pruritus may present 5 years before diagnosis; pruritus portends a poor prognosis
  –Iron deficiency anemia
• Chronic renal failure: pruritus begins 6 months after start of dialysis, affects up to 75% of patients during or immediately after dialysis
• Malignancies: Adenocarcinoma, squamous cell carcinomas
• HIV: Increasing frequency with disease progression
• Psychogenic states: May have underlying personality disorder such as OCD
• Senescence: Elderly pruritus very common
• Drug reactions
• Less common etiologies (“zebras”) include multiple myeloma, carcinoid syndrome, Waldenström's macroglobulinemia, parasitic infections (e.g., hookworm, onchocerciasis, ascariasis, trichinosis), hepatitis B and C, diabetes mellitus (results in perianal pruritus)

» READ BOOK EXCERPT ONLINE »

Source: In a Page: Signs and Symptoms, 2004

Pruritis with Rash: Differential Diagnosis
(In a Page: Signs and Symptoms)

• Infectious causes
  –Fungal infections: Dermatophyte infections (tinea), candidiasis (beefy red color with satellite papules), seborrheic dermatitis (from Pityrosporum, common in hair-bearing areas, with scale)
  –Bacterial infections: Erythrasma (from Corynebacterium), frequently in axilla
  –Viral infections: Chicken pox (Varicella)
  –Insect vectors: Scabies, pediculosis or lice (also present on spouse and other family members), flea bites (typically on legs), mosquito bites (central punctum)
  –Mixed infections: Intertrigo (present at skin folds or area of friction)
• Noninfectious causes
  –Contact dermatitis (e.g. rhus dermatitis): May be revealed in contact history, linear vesicular lesions with sharp margins
  –Atopic dermatitis: Erythematous rash in flexural areas, patient with seasonal allergies and/or asthma
  –Eczematous dermatitis: Stasis dermatitis (hyperpigmented legs of patients with vascular disease), lichen simplex chronicus (anxious patient who chronically scratches), dyshidrotic eczema (on hands and feet with scaling, erythema, and minute vesicles and painful fissures), nummular eczema (round scaly lesions on dry skin, common in the winter)
  –Pityriasis rosea: Mostly on trunk in “Christmas tree” pattern, begins as single, larger “herald” patch
  –Lichen planus: Koebner reaction (lesions occur with trauma, such as linear lesions from scratching), purple, polygonal, pruritic papules
  –Psoriasis: Koebner reaction, pink, silvery scaling plaques, extensor surfaces, nail pits
• Less common etiologies (“zebras”) include mycoses fungoides (referred to as Sézary syndrome if erythroderma, lymphadenopathy, and atypical circulating white blood cells are present), dermatitis herpetiformis, miliaria (heat rash)

» READ BOOK EXCERPT ONLINE »

Source: In a Page: Signs and Symptoms, 2004

Scalp Rash: Differential Diagnosis
(In a Page: Signs and Symptoms)

• Seborrheic dermatitis (“cradle cap,” “dandruff”)
  –The most common scalp condition, it occurs across all age ranges
  –May be caused by Pityrosporum ovale
  –An inflammatory condition that causes itching and loose, silvery-white scale on scalp, and occasionally blepharitis
  –May also affect the eyebrows, nasolabial folds, external auditory canals, chin, anterior chest, upper back, and groin
  –Does not cause hair loss
  –The scalp is not usually erythematous, but other affected skin areas may be red, greasy, or oily

• Tinea capitis
  –Most commonly caused by Trichophyton tonsurans or rarely Microsporum canis
  –Presents as patches of scale and/or pruritus with broken hairs, patchy hair loss (i.e., “black dot alopecia”)
  –May progress to a kerion (see below)

• Kerion
  –A boggy, tender, subcutaneous fungal infection (dermatophyte)
  –Often has associated drainage and hair loss

Scalp folliculitis
–Presents as recurrent, itchy, crusted papules or pustules
–An overgrowth of Staphylococcus aureus

• Psoriasis
  –Usually presents with plaques of thick, silvery, adherent scalp scale that overlies well-demarcated patches of erythema
  –Often occurs at the ears and occipital area
  –May be limited to the scalp, but often has skin disease, nail pitting, or nail dystrophy
• Dissecting cellulitis of the scalp
  –Chronic, tender, boggy, often suppurative subcutaneous fluctuant masses
  –Occurs in black patients
  –May be associated with acne keloidalis, which can cause a scarring hair loss at the occiput

• Discoid lupus
  –Presents initially as well-demarcated erythematous plaques of patchy, scarring scalp hair loss, then spreads centrifugally

Contact dermatitis

» READ BOOK EXCERPT ONLINE »

Source: In a Page: Signs and Symptoms, 2004

Papular rash: Medical causes
(Handbook of Signs & Symptoms (Third Edition))

Acne vulgaris

With acne vulgaris, rupture of enlarged comedones produces inflamed — and perhaps, painful and pruritic — papules, pustules, nodules, or cysts on the face and sometimes the shoulders, chest, and back.

Anthrax (cutaneous)

Anthrax is an acute infectious disease caused by the gram-positive, spore-forming bacterium Bacillus anthracis. The disease can occur in humans exposed to infected animals, tissue from infected animals, or biological warfare. Cutaneous anthrax occurs when the bacterium enters a cut or abrasion on the skin. The infection begins as a small, painless, or pruritic macular or papular lesion resembling an insect bite. Within 1 to 2 days, it develops into a vesicle and then a painless ulcer with a characteristic black, necrotic center. Lymphadenopathy, malaise, a headache, or a fever may develop.

Dermatomyositis

Gottron’s papules — flat, violet-colored lesions on the dorsa of the finger joints and the nape of the neck and shoulders — are pathognomonic of dermatomyositis, as is the dusky lilac discoloration of periorbital tissue and lid margins (heliotrope edema). These signs may be accompanied by a transient, erythematous, macular rash in a malar distribution on the face and sometimes on the scalp, forehead, neck, upper torso, and arms. This rash may be preceded by symmetrical muscle soreness and weakness in the pelvis, upper extremities, shoulders, neck and, possibly, the face (polymyositis).

Follicular mucinosis

With follicular mucinosis, perifollicular papules or plaques are accompanied by prominent alopecia.

Fox-Fordyce disease

Fox-Fordyce disease is a chronic disorder that’s marked by pruritic papules on the axillae, pubic area, and areolae associated with apocrine sweat gland inflammation. Sparse hair growth in these areas is also common.

Granuloma annulare

Granuloma annulare is a benign, chronic disorder that produces papules that usually coalesce to form plaques. The papules spread peripherally to form a ring with a normal or slightly depressed center. They usually appear on the feet, legs, hands, or fingers and may be pruritic or asymptomatic.

Human immunodeficiency virus (HIV) infection

Acute infection with the HIV retrovirus typically causes a generalized maculopapular rash. Other signs and symptoms include a fever, malaise, a sore throat, and a headache. Lymphadenopathy and hepatosplenomegaly may also occur. Most patients don’t recall these symptoms of acute infection.

Kaposi’s sarcoma

Kaposi’s sarcoma is characterized by purple or blue papules or macules of vascular origin on the skin, mucous membranes, and viscera. These lesions decrease in size with firm pressure and then return to their original size within 10 to 15 seconds. They may become scaly and ulcerate with bleeding.

Multiple variants of Kaposi’s sarcoma are known; most individuals are immunocompromised in some way, especially those with HIV or acquired immunodeficiency syndrome. Human herpes virus-8 has been strongly implicated as a cofactor in the development of Kaposi’s sarcoma.

Lichen planus

Discrete, flat, angular or polygonal, violet papules, commonly marked with white lines or spots, are characteristic of lichen planus. The papules may be linear or coalesce into plaques and usually appear on the lumbar region, genitalia, ankles, anterior tibiae, and wrists. Lesions usually develop first on the buccal mucosa as a lacy network of white or gray threadlike papules or plaques. Pruritus, distorted fingernails, and atrophic alopecia commonly occur.

Mononucleosis (infectious)

A maculopapular rash that resembles rubella is an early sign of mononucleosis in 10% of patients. The rash is typically preceded by a headache, malaise, and fatigue. It may be accompanied by a sore throat, cervical lymphadenopathy, and fluctuating temperature with an evening peak of 101° to 102° F (38.3° to 38.9° C). Splenomegaly and hepatomegaly may also develop.

Necrotizing vasculitis

With necrotizing vasculitis, crops of purpuric, but otherwise asymptomatic, papules are typical. Some patients also develop a low-grade fever, a headache, myalgia, arthralgia, and abdominal pain.

Pityriasis rosea

Pityriasis rosea begins with an erythematous “herald patch” — a slightly raised, oval lesion about 2 to 6 cm in diameter that may appear anywhere on the body. A few days to weeks later, yellow to tan or erythematous patches with scaly edges appear on the trunk, arms, and legs, commonly erupting along body cleavage lines in a characteristic “pine tree” pattern. These patches may be asymptomatic or slightly pruritic, are 0.5 to 1 cm in diameter, and typically improve with skin exposure.

Polymorphic light eruption

Abnormal reactions to light may produce papular, vesicular, or nodular rashes on sun-exposed areas. Other symptoms include pruritus, a headache, and malaise.

Psoriasis

Psoriasis is a common chronic disorder that begins with small, erythematous papules on the scalp, chest, elbows, knees, back, buttocks, and genitalia. These papules are sometimes pruritic and painful. Eventually they enlarge and coalesce, forming elevated, red, scaly plaques covered by characteristic silver scales, except in moist areas such as the genitalia. These scales may flake off easily or thicken, covering the plaque. Associated features include pitted fingernails and arthralgia.

Rosacea

Rosacea is a hyperemic disorder characterized by persistent erythema, telangiectasia, and recurrent eruption of papules and pustules on the forehead, malar areas, nose, and chin. Eventually, eruptions occur more frequently and erythema deepens. Rhinophyma may occur in severe cases.

Seborrheic keratosis

With seborrheic keratosis, a cutaneous disorder, benign skin tumors begin as small, yellow-brown papules on the chest, back, or abdomen, eventually enlarging and becoming deeply pigmented. However, in blacks, these papules may remain small and affect only the malar part of the face (dermatosis papulosa nigra).

Smallpox

(variola major). Initial signs and symptoms of smallpox include a high fever, malaise, prostration, a severe headache, a backache, and abdominal pain. A maculopapular rash develops on the mucosa of the mouth, pharynx, face, and forearms and then spreads to the trunk and legs. Within 2 days, the rash becomes vesicular and later pustular. The lesions develop at the same time, appear identical, and are more prominent on the face and extremities. The pustules are round, firm, and deeply embedded in the skin. After 8 to 9 days, the pustules form a crust, and later the scab separates from the skin, leaving a pitted scar. In fatal cases, death results from encephalitis, extensive bleeding, or secondary infection.

Syringoma

With syringoma, adenoma of the sweat glands produces a yellowish or erythematous papular rash on the face (especially the eyelids), neck, and upper chest.

Systemic lupus erythematosus (SLE)

SLE is characterized by a “butterfly rash” of erythematous maculopapules or discoid plaques that appears in a malar distribution across the nose and cheeks. Similar rashes may appear elsewhere, especially on exposed body areas. Other cardinal features include photosensitivity and nondeforming arthritis, especially in the hands, feet, and large joints. Common effects are patchy alopecia, mucous membrane ulceration, a low-grade or spiking fever, chills, lymphadenopathy, anorexia, weight loss, abdominal pain, diarrhea
or constipation, dyspnea, tachycardia, hematuria, a headache, and irritability.

Typhus

Typhus is a rickettsial disease transmitted to humans by fleas, mites, or body lice. Initial symptoms include
a headache, myalgia, arthralgia, and malaise, followed by an abrupt onset of chills, a fever, nausea, and vomiting. A maculopapular rash may be present in some cases.

Other causes

Drugs

Transient maculopapular rashes, usually on the trunk, may accompany reactions to many drugs, including antibiotics, such as tetracycline, ampicillin, cephalosporins, and sulfonamides; benzodiazepines, such as diazepam; lithium; phenylbutazone; gold salts; allopurinol; isoniazid; and salicylates.

» READ BOOK EXCERPT ONLINE »

Source: Handbook of Signs & Symptoms (Third Edition), 2006

Papular rash: Medical causes
(Professional Guide to Signs & Symptoms (Fifth Edition))

Acne vulgaris

With this disorder, rupture of enlarged comedones produces inflamed—and perhaps, painful and pruritic—papules, pustules, nodules, or cysts on the face and sometimes the shoulders, chest, and back.

Anthrax (cutaneous)

Anthrax is an acute infectious disease caused by the gram-positive, spore-forming bacterium Bacillus anthracis. The disease can occur in humans exposed to infected animals, tissue from infected animals, or biological warfare. Cutaneous anthrax occurs when the bacterium enters a cut or abrasion on the skin. The infection begins as a small, painless, or pruritic macular or papular lesion resembling an insect bite. Within 1 to 2 days it develops into a vesicle and then a painless ulcer with a characteristic black, necrotic center. Lymphadenopathy, malaise, headache, or fever may develop.

Dermatitis (perioral)

This inflammatory disorder causes an erythematous eruption of discrete, tiny papules and pustules on the nasolabial fold, chin, and upper lip area. The lesions may be pruritic and painful.

Dermatomyositis

Gottron’s papules—flat, violet-colored lesions on the dorsa of the finger joints and the nape of the neck and shoulders—are pathognomonic of this disorder, as is the dusky lilac discoloration of periorbital tissue and lid margins (heliotrope edema). These signs may be accompanied by a transient, erythematous, macular rash in a malar distribution on the face and sometimes on the scalp, forehead, neck, upper torso, and arms. This rash may be preceded by symmetrical muscle soreness and weakness in the pelvis, upper extremities, shoulders, neck and, possibly, the face (polymyositis).

Erythema migrans

Transmitted through a tick bite, this systemic disorder is characterized by a papular or macular rash starting from a single lesion (usually on the leg) that spreads at the margins while clearing centrally. The rash commonly appears on the thighs, trunk, or upper arms and is the classic early sign of Lyme disease, but about 25% of patients don’t develop this skin manifestation. It may be accompanied by fever, chills, headache, malaise, nausea, vomiting, fatigue, backache, knee pain, and stiff neck.

Follicular mucinosis

With this cutaneous disorder, perifollicular papules or plaques are accompanied by prominent alopecia.

Fox-Fordyce disease

This chronic disorder is marked by pruritic papules on the axillae, pubic area, and areolae associated with apocrine sweat gland inflammation. Sparse hair growth in these areas is also common.

Gonococcemia

With this chronic STD, sporadic eruption of an erythematous macular rash is characteristic, although fistulas and petechiae may appear. The rash typically affects the distal extremities (palms and soles) and rapidly becomes maculopapular, vesiculopustular and, commonly, hemorrhagic. Bullae may form. The mature lesion is raised; has a gray, necrotic center; and is surrounded by erythema. Typically, it heals in 3 to 4 days. Eruptions are commonly accompanied by fever and joint pain.

Granuloma annulare

This benign, chronic disorder produces papules that usually coalesce to form plaques. The papules spread peripherally to form a ring with a normal or slightly depressed center. They usually appear on the feet, legs, hands, or fingers, and may be pruritic or asymptomatic.

Human immunodeficiency virus (HIV) infection

Acute infection with the HIV retrovirus typically causes a generalized maculopapular rash. Other signs and symptoms include fever, malaise, sore throat, and headache. Lymphadenopathy and hepatosplenomegaly may also occur. Most patients don’t recall these symptoms of acute infection.

Insect bites

Salivary secretions from insect bites—especially ticks, lice, flies, and mosquitoes—may produce an allergic reaction associated with a papular, macular, or petechial rash. The rash is usually accompanied by nonspecific signs and symptoms, such as fever, myalgia, headache, lymphadenopathy, nausea, and vomiting.

Kaposi’s sarcoma

This neoplastic disorder is characterized by purple or blue papules or macules of vascular origin on the skin, mucous membranes, and viscera. These lesions decrease in size with firm pressure and then return to their original size within 10 to 15 seconds. They may become scaly and ulcerate with bleeding.

Multiple variants of Kaposi’s sarcoma are known; most individuals are immunocompromised in some way, especially those with HIV/AIDS (acquired immunodeficiency syndrome). Human herpes virus-8 (HHV-8) has been strongly implicated as a cofactor in the development of Kaposi’s sarcoma.

Leprosy

This chronic infectious disorder produces various skin lesions. Early papular or macular lesions are erythematous, hypopigmented, and symmetrical (with lepromatous leprosy) or asymmetrical (with tuberculoid leprosy). The lesions may spread over the entire skin surface. Later, plaques and nodules form, especially on the ear lobes, nose, eyebrows, and forehead. Associated findings include hypoesthesia or anesthesia, anhidrosis, and dry, scaly skin in affected areas; enlarged, palpable peripheral nerves with severe neuralgia; and muscle atrophy and contractures.

Lichen amyloidosis

This idiopathic cutaneous disorder produces discrete, firm, hemispherical, pruritic papules on the anterior tibiae. Papules may be brown or yellow, smooth or scaly.

Lichen planus

Discrete, flat, angular or polygonal, violet papules, commonly marked with white lines or spots, are characteristic of this disorder. The papules may be linear or coalesce into plaques and usually appear on the lumbar region, genitalia, ankles, anterior tibiae, and wrists. Lesions usually develop first on the buccal mucosa as a lacy network of white or gray threadlike papules or plaques. Pruritus, distorted fingernails, and atrophic alopecia commonly occur.

Monkeypox

Usually preceded 1 to 3 days by a fever, a papular rash is a characteristic sign of monkeypox. The rash is often blisterlike and can follow these stages: vesiculation, postulation, umbilication, and crusting. Frequently beginning on the face and spreading to the trunk and extremities, the rash may be either localized or generalized. Other accompanying symptoms in humans include lymphadenopathy, chills, throat pain, and muscle aches. Most humans recover within 2 to 4 weeks.

Mononucleosis (infectious)

A maculopapular rash that resembles rubella is an early sign of this infection in 10% of patients. The rash is typically preceded by headache, malaise, and fatigue. It may be accompanied by sore throat, cervical lymphadenopathy, and fluctuating temperature with an evening peak of 101° to 102° F (38.3° to 38.9° C). Splenomegaly and hepatomegaly may also develop.

Mycosis fungoides

Stage I (premycotic stage) of this rare, cutaneous T-cell lymphoma is marked by the eruption of erythematous, pruritic macules on the trunk and extremities. In stage II, these lesions coalesce into pruritic papules and plaques, and nodes become irregular. Stage III is evidenced by large, irregular, brown to red tumors that ulcerate and are painful and itchy.

Necrotizing vasculitis

With this systemic disorder, crops of purpuric, but otherwise asymptomatic, papules are typical. Some patients also develop low-grade fever, headache, myalgia, arthralgia, and abdominal pain.

Parapsoriasis (chronic)

This disorder mimics psoriasis, producing small to moderately sized asymptomatic papules with a thin, adherent scale, primarily on the trunk, hands, and feet.

Pityriasis rosea

This disorder begins with an erythematous “herald patch”—a slightly raised, oval lesion about 2 to 6 cm in diameter that may appear anywhere on the body. A few days to weeks later, yellow to tan or erythematous patches with scaly edges appear on the trunk, arms, and legs, commonly erupting along body cleavage lines in a characteristic “pine tree” pattern. These patches may be asymptomatic or slightly pruritic, are 0.5 to 1 cm in diameter, and typically improve with moderate skin exposure to sunlight. This treatment should be used cautiously, however, to avoid sunburn.

Pityriasis rubra pilaris

This rare chronic disorder initially produces scaling seborrhea on the scalp that spreads to the face and ears. Scaly red patches then develop on the palms and soles; these patches thicken, become keratotic, and may develop painful fissures. Later, follicular papules erupt on the hands and forearms and then spread over wide areas of the trunk, neck, and extremities. These papules coalesce into large, scaly, erythematous plaques. Striated fingernails may appear.

Polymorphic light eruption

Abnormal reactions to light may produce papular, vesicular, or nodular rashes on sun-exposed areas. Other symptoms include pruritus, headache, and malaise.

Psoriasis

This common chronic disorder begins with small, erythematous papules on the scalp, chest, elbows, knees, back, buttocks, and genitalia. These papules are sometimes pruritic and painful. Eventually they enlarge and coalesce, forming elevated, red, scaly plaques covered by characteristic silver scales, except in moist areas such as the genitalia. These scales may flake off easily or thicken, covering the plaque. Associated features include pitted fingernails and arthralgia.

Rat bite fever

A maculopapular or petechial rash develops on the palms and soles several weeks after a bite from an infected rodent. Other findings typically include pain, redness, and swelling at the bite site; tender regional lymph nodes; fever with chills; malaise; headache; and myalgia.

Rosacea

This hyperemic disorder is characterized by persistent erythema, telangiectasia, and recurrent eruption of papules and pustules on the forehead, malar areas, nose, and chin. Eventually, eruptions occur more frequently and erythema deepens. Rhinophyma may occur in severe cases.

Sarcoidosis

This multisystem granulomatous disorder may produce crops of small, erythematous or yellow-brown papules around the eyes and mouth and on the nose, nasal mucosa, and upper back. Associated findings include dyspnea with a nonproductive cough, fatigue, arthralgia, weight loss, lymphadenopathy, vision loss, and dysphagia.

Seborrheic keratosis

With this cutaneous disorder, benign skin tumors begin as small, yellow-brown papules on the chest, back, or abdomen, eventually enlarging and becoming deeply pigmented. However, in blacks, these papules may remain small and affect only the malar part of the face (dermatosis papulosa nigra).

Smallpox (variola major)

Initial signs and symptoms include high fever, malaise, prostration, severe headache, backache, and abdominal pain. A maculopapular rash develops on the mucosa of the mouth, pharynx, face, and forearms and then spreads to the trunk and legs. Within 2 days the rash becomes vesicular and later pustular. The lesions develop at the same time, appear identical, and are more prominent on the face and extremities. The pustules are round, firm, and deeply embedded in the skin. After 8 to 9 days the pustules form a crust, and later the scab separates from the skin leaving a pitted scar. In fatal cases, death results from encephalitis, extensive bleeding, or secondary infection.

Syphilis

A discrete, reddish brown, mucocutaneous rash and general lymphadenopathy herald the onset of secondary syphilis. The rash may be papular, macular, pustular, or nodular. It typically erupts between rolls of fat on the trunk and proximally on the arms, palms, soles, face, and scalp. Lesions in warm, moist areas enlarge and erode, producing highly contagious, pink or grayish white condylomata lata. The patient may also experience mild headache, malaise, anorexia, weight loss, nausea and vomiting, sore throat, low-grade fever, temporary alopecia, and brittle, pitted nails.

Syringoma

With this disorder, adenoma of the sweat glands produces a yellowish or erythematous papular rash on the face (especially the eyelids), neck, and upper chest.

Systemic lupus erythematosus (SLE)

SLE is characterized by a “butterfly rash” of erythematous maculopapules or discoid plaques that appears in a malar distribution across the nose and cheeks. Similar rashes may appear elsewhere, especially on exposed body areas. Other cardinal features include photosensitivity and nondeforming arthritis, especially in the hands, feet, and large joints. Common effects are patchy alopecia, mucous membrane ulceration, low-grade or spiking fever, chills, lymphadenopathy, anorexia, weight loss, abdominal pain, diarrhea or constipation, dyspnea, tachycardia, hematuria, headache, and irritability.

Typhus

Typhus is a rickettsial disease transmitted to humans by fleas, mites, or body louse. Initial symptoms include headache, myalgia, arthralgia, and malaise, followed by an abrupt onset of chills, fever, nausea, and vomiting. A maculopapular rash may be present in some cases.

Other causes

Drugs

Transient maculopapular rashes, usually on the trunk, may accompany reactions to many drugs, including antibiotics, such as tetracycline, ampicillin, cephalosporins, and sulfonamides; benzodiazepines such as diazepam; lithium; gold salts; allopurinol; isoniazid; and salicylates.

» READ BOOK EXCERPT ONLINE »

Source: Professional Guide to Signs & Symptoms (Fifth Edition), 2006

Scaling Rash: Differential Overview
(Field Guide to Bedside Diagnosis)

❑ Eczema

❑ Atopic dermatitis

❑ Seborrheic dermatitis

❑ Tinea versicolor

❑ Pityriasis rosea

❑ Psoriasis

❑ Contact dermatitis

❑ Tinea corporis

❑ Tinea manuum

❑ Stasis dermatitis

❑ Drugs

❑ Lichen planus

❑ Secondary syphilis

❑ Reiter

❑ Bowen disease

❑ Cutaneous T-cell lymphoma

Clinical Findings

Eczema  Red, poorly defined patches appear on the neck and flexor surfaces and thicken with excoriations caused by excessive scratching. Coinlike (num-mular) lesions are common on the lower legs.

Atopic dermatitis  Pruritus/scratching lead to eczematous lesions. A personal or family history of atopy (asthma, allergic rhinitis) is elicited. An extra fold of skin below the lower eyelid is a common finding.

Seborrheic dermatitis  Pink-red scaly patches with an indistinct outline develop in the scalp, eyebrows, nasolabial crease, behind the ears, in the ear canal, over the sternum, and in intertriginous areas. New-onset severe seborrheic dermatitis may be the first sign of HIV infection.

Tinea versicolor  A finely scaled macular eruption appears over the trunk. Hypopigmented macules may occur on dark skin; hyperpigmented macules occur on light skin.

Pityriasis rosea  Salmon-pink oval lesions have their long axis following the cleavage lines of the skin. Lesions have a collarette of fine scale around the perimeter. They are distributed on the trunk and proximal extremities, sparing the palms (involved in secondary syphilis). There is usually a herald patch, which is the initial and largest lesion.

Psoriasis  Pink-red sharply demarcated plaques have a silvery micaceous scale. They occur on the elbows, knees, scalp, and gluteal crease. There is often nail dystrophy with pitting, onycholysis, and yellow discoloration. Guttate psoriasis—a widespread eruption of small, scaling lesions—may be brought on by streptococcal infection, lithium, beta-blockers, rapid steroid taper, or acute HIV infection. It spares the face, palms, and soles.

Contact dermatitis  Well-demarcated lesions develop in areas of thin, exposed skin. Lesions are in a localized distribution, reflecting the contact exposure. Common precipitants include poison ivy, nickel jewelry, formaldehyde (in clothing and nail polish), fragrances, perservatives, topical antibiotic cream, rubber, and tanning chemicals. Latex exposure can cause type I hypersensitivity reactions in addition to allergic contact dermatitis.

Tinea corporis  Red annular lesions have an active scaling border with central clearing. The inner thigh is a typical location.

Tinea manuum  One hand is gray-red with scaling within the palmar creases, associated with scaling and nail dystrophy on both feet.

Stasis dermatitis  The lower extremities are edematous, red, and scaling. A brownish discoloration develops due to hemosiderin; it occurs especially over the medial ankle.

Drugs  Pityriasis rosea-like lesions may be seen with beta-blockers, captopril, clonidine, gold, griseofulvin, isotretinoin, metronidazole, and penicillin. Lichenoid eruptions can be produced by gold, antimalarials, thiazides, quinidine, phenothiazines, sulfonylureas, furosemide, methyldopa, griseofulvin, beta-blockers, and captopril.

Lichen planus  Lesions appear as violet-colored, polygonal, and flat-topped papules, traversed by a network of thin gray-white lines (Wickham striae). They occur in the flexor aspects of the wrists, ankles, and glans penis. The oral mucosa also has lacy white plaques or erosions. The plaques are only scaly on the legs.

Secondary syphilis  Scattered red-brown papules with thin scale often involve the palms or soles. Associated findings that assist diagnosis are systemic symptoms such as fever, malaise, and lymphadenopathy; recent (4 to 8 weeks previously) chancre; annular plaques on the face; alopecia; or broad-based and moist condyloma lata.

Reiter  Psoriasiform lesions occur in a patient with arthritis, urethritis, and/or uveitis.

Bowen disease  A single, well-demarcated plaque with variable scale develops in a patient with a known history of arsenic exposure, or exposure manifest as palmar hyperkeratosis.

Cutaneous T-cell lymphoma  Retiform (net-like) psoriatic lesions appear without the typical distribution, with an increase in palpability, and do not respond to topical steroids. The earliest lesions are macular, scaly, and red, admixed with yellow (poikiloderma).

» READ BOOK EXCERPT ONLINE »

Source: Field Guide to Bedside Diagnosis, 2007

Papular rash: Medical causes
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

Acne vulgaris

With acne vulgaris, rupture of enlarged comedones produces inflamed — and possibly painful and pruritic — papules, pustules, nodules, or cysts on the face and sometimes the shoulders, chest, and back.

Anthrax (cutaneous)

Cutaneous anthrax begins as a small, painless, or pruritic macular or papular lesion resembling an insect bite. Within 2 days, it develops into a vesicle and then a painless ulcer with a characteristic black, necrotic center. Lymphadenopathy, malaise, headache, or fever may develop.

Dermatitis (perioral)

Perioral dermatitis is an inflammatory disorder that causes an erythematous eruption of discrete, tiny papules and pustules on the nasolabial fold, chin, and upper lip area. The lesions may be pruritic and painful.

Erythema migrans

Transmitted through a tick bite, erythema migrans is a systemic disorder characterized by a papular or macular rash starting from a single lesion (usually on the leg) that spreads at the margins while clearing centrally. The rash commonly appears on the thighs, trunk, or upper arms and is the classic early sign of Lyme disease, but about 25% of patients don’t develop this skin manifestation. It may be accompanied by fever, chills, headache, malaise, nausea, vomiting, fatigue, backache, knee pain, and stiff neck.

Gonococcemia

In gonococcemia — a chronic STD — sporadic eruption of an erythematous macular rash is characteristic, although fistulas and petechiae may appear. The rash typically affects the distal extremities (palms and soles) and rapidly becomes maculopapular, vesiculopustular and, commonly, hemorrhagic. Bullae may form. The mature lesion is raised; has a gray, necrotic center; and is surrounded by erythema. Typically, it heals in 3 to 4 days. Eruptions are commonly accompanied by fever and joint pain.

Human immunodeficiency virus infection

Acute infection with human immunodeficiency virus (HIV) typically causes a generalized maculopapular rash. Other signs and symptoms include fever, malaise, sore throat, and headache. Lymphadenopathy and hepatosplenomegaly may also occur. Most patients don’t recall these symptoms of acute infection.

Insect bites

Salivary secretions from insect bites — especially ticks, lice, flies, and mosquitoes — may produce an allergic reaction associated with a papular, macular, or petechial rash. The rash is usually accompanied by such nonspecific signs and symptoms as fever, myalgia, headache, lymphadenopathy, nausea, and vomiting.

Kaposi’s sarcoma

Kaposi’s sarcoma is characterized by purple or blue papules or macules of vascular origin on the skin, mucous membranes, and viscera. These lesions decrease in size with firm pressure and then return to their original size within 10 to 15 seconds. They may become scaly and ulcerate with bleeding.

Lichen amyloidosis

Lichen amyloidosis, an idiopathic cutaneous disorder, produces discrete, firm, hemispherical, pruritic papules on the anterior tibiae, feet, and thighs. Papules may be brown or yellow and smooth or scaly.

Lichen planus

Discrete, flat, angular or polygonal, violet papules, commonly marked with white lines or spots, are characteristic of lichen planus. The papules may be linear or may coalesce into plaques and usually appear on the lumbar region, genitalia, ankles, anterior tibiae, and wrists. Lesions usually develop first on the buccal mucosa as a lacy network of white or gray threadlike papules or plaques. Pruritus, distorted fingernails, and atrophic alopecia commonly occur.

Mononucleosis (infectious)

A maculopapular rash that resembles rubella is an early sign of infectious mononucleosis in 10% of patients. The rash is typically preceded by headache, malaise, and fatigue. It may be accompanied by sore throat, cervical lymphadenopathy, and fluctuating temperature with an evening peak of 101° to 102° F (38.3° to 38.9° C). Splenomegaly and hepatomegaly may also develop.

Pityriasis rosea

Pityriasis rosea begins with an erythematous “herald patch” — a slightly raised, oval lesion about 2 to 6 cm in diameter that may appear anywhere on the body. A few days to weeks later, yellow to tan or erythematous patches with scaly edges appear on the trunk, arms, and legs, commonly erupting along body cleavage lines in a characteristic “pine tree” pattern. These patches may be asymptomatic or slightly pruritic, are 0.5 to 1 cm in diameter, and typically improve with skin exposure.

Polymorphic light eruption

Abnormal reactions to light may produce papular, vesicular, or nodular rashes on sun-exposed areas. Other symptoms include pruritus, headache, and malaise.

Psoriasis

Psoriasis is a common chronic disorder that begins with small, erythematous papules on the scalp, chest, elbows, knees, back, buttocks, and genitalia. These papules are sometimes pruritic and painful. Eventually they enlarge and coalesce, forming elevated, red, scaly plaques covered by characteristic silver scales, except in moist areas such as the genitalia. These scales may flake off easily or thicken, covering the plaque. Associated features include pitted fingernails and arthralgia.

Rosacea

Rosacea, a hyperemic disorder, is characterized by persistent erythema, telangiectasia, and recurrent eruption of papules and pustules on the forehead, malar areas, nose, and chin. Eventually, eruptions occur more frequently and erythema deepens. Rhinophyma may occur in severe cases.

Sarcoidosis

Sarcoidosis, a multisystem granulomatous disorder, may produce crops of small, erythematous or yellow-brown papules around the eyes and mouth and on the nose, nasal mucosa, and upper back. Associated findings include dyspnea with a nonproductive cough, fatigue, arthralgia, weight loss, lymphadenopathy, vision loss, and dysphagia.

Seborrheic keratosis

With seborrheic keratosis, benign skin tumors begin as small, yellow-brown papules on the chest, back, or abdomen, eventually enlarging and becoming deeply pigmented. However, in blacks, these papules may remain small and affect only the malar part of the face (dermatosis papulosa nigra).

Smallpox

Initial signs and symptoms of smallpox (also known as variola major) include high fever, malaise, prostration, severe headache, backache, and abdominal pain. A maculopapular rash develops on the mucosa of the mouth, pharynx, face, and forearms and then spreads to the trunk and legs. Within 2 days, the rash becomes vesicular and, later, pustular. The lesions develop at the same time, appear identical, and are more prominent on the face and extremities. The pustules are round, firm, and deeply embedded in the skin. After 8 to 9 days, the pustules form a crust, and later the scab separates from the skin, leaving a pitted scar. In fatal cases, death results from encephalitis, extensive bleeding, or secondary infection.

Syphilis

A discrete, reddish brown, mucocutaneous rash and general lymphadenopathy herald the onset of secondary syphilis. The rash may be papular, macular, pustular, or nodular. It typically erupts between rolls of fat on the trunk and proximally on the arms, palms, soles, face, and scalp. Lesions in warm, moist areas enlarge and erode, producing highly contagious, pink or grayish white condylomata lata. The patient may also experience mild headache, malaise, anorexia, weight loss, nausea and vomiting, sore throat, low-grade fever, temporary alopecia, and brittle, pitted nails.

Systemic lupus erythematosus

Systemic lupus erythematosus (SLE) is characterized by a “butterfly rash” of erythematous maculopapules or discoid plaques that appears in a malar distribution across the nose and cheeks. Similar rashes may appear elsewhere, especially on exposed body areas. Other cardinal features of SLE include photosensitivity and nondeforming arthritis, especially in the hands, feet, and large joints. Common effects are patchy alopecia, mucous membrane ulceration, low-grade or spiking fever, chills, lymphadenopathy, anorexia, weight loss, abdominal pain, diarrhea or constipation, dyspnea, tachycardia, hematuria, headache, and irritability.

Other causes

Drugs

Transient maculopapular rashes, usually on the trunk, may accompany reactions to many drugs, including antibiotics, such as tetracycline, ampicillin, cephalosporins, and sulfonamides; benzodiazepines such as diazepam; lithium; phenylbutazone; gold salts; allopurinol; isoniazid; and salicylates.

» READ BOOK EXCERPT ONLINE »

Source: Signs & Symptoms: A 2-in-1 Reference for Nurses, 2007

Papular rash: Medical causes
(Nursing: Interpreting Signs and Symptoms)

Acne vulgaris.With acne vulgaris, rupture of enlarged comedones produces inflamed—and perhaps, painful and pruritic—papules, pustules, nodules, or cysts on the face and sometimes the shoulders, chest, and back.

Anthrax (cutaneous).Anthrax begins as a small, painless, or pruritic macular or papular lesion resembling an insect bite. Within 1 or 2 days, it develops into a vesicle and then a painless ulcer with a characteristic black, necrotic center. Lymphadenopathy, malaise, headache, or fever may develop.

Dermatomyositis.Gottron's papules—flat, violet-colored lesions on the dorsa of the finger joints and the nape of the neck and shoulders—are pathognomonic of dermatomyositis, as is the dusky lilac discoloration of periorbital tissue and lid margins (heliotrope edema). These signs may be accompanied by a transient, erythematous, macular rash in a malar distribution on the face and sometimes on the scalp, forehead, neck, upper torso, and arms. This rash may be preceded by symmetrical muscle soreness and weakness in the pelvis, upper extremities, shoulders, neck and, possibly, the face (polymyositis).

Follicular mucinosis.With follicular mucinosis, perifollicular papules or plaques are accompanied by prominent alopecia.

Fox-Fordyce disease.Fox-Fordyce disease is marked by pruritic papules on the axillae, pubic area, and areolae associated with apocrine sweat gland inflammation. Sparse hair growth in these areas is also common.

Granuloma annulare.Granuloma annulare produces papules that usually coalesce to form plaques. The papules spread peripherally to form a ring with a normal or slightly depressed center. They usually appear on the feet, legs, hands, or fingers and may be pruritic or asymptomatic.

Human immunodeficiency virus (HIV) infection.Acute infection with the HIV retrovirus typically causes a generalized maculopapular rash. Other signs and symptoms include fever, malaise, sore throat, and headache. Lymphadenopathy and hepatosplenomegaly may also occur.

Kaposi's sarcoma.Kaposi's sarcoma is characterized by purple or blue papules or macules of vascular origin on the skin, mucous membranes, and viscera. These lesions decrease in size with firm pressure and then return to their original size within 10 to 15 seconds. They may become scaly and ulcerate with bleeding.

Lichen planus.Discrete, flat, angular or polygonal, violet papules, commonly marked with white lines or spots, are characteristic of lichen planus. The papules may be linear or coalesce into plaques and usually appear on the lumbar region, genitalia, ankles, anterior tibiae, and wrists. Lesions usually develop first on the buccal mucosa as a lacy network of white or gray threadlike papules or plaques. Pruritus, distorted fingernails, and atrophic alopecia commonly occur.

Monkeypox.Usually preceded 1 to 3 days by a fever, a papular rash is a characteristic sign of monkeypox. The rash is commonly blisterlike and can follow these stages: vesiculation, postulation, umbilication, and crusting. Typically beginning on the face and spreading to the trunk and extremities, the rash may be either localized or generalized. Other accompanying symptoms in humans include lymphadenopathy, chills, throat pain, and muscle aches.

Mononucleosis (infectious).A maculopapular rash that resembles rubella is an early sign of mononucleosis in 10% of patients. The rash is typically preceded by headache, malaise, and fatigue. It may be accompanied by sore throat, cervical lymphadenopathy, and fluctuating temperature with an evening peak of 101° to 102° F (38.3° to 38.9° C). Splenomegaly and hepatomegaly may also develop.

Necrotizing vasculitis.With necrotizing vasculitis, crops of purpuric, but otherwise asymptomatic, papules are typical. Some patients also develop low-grade fever, headache, myalgia, arthralgia, and abdominal pain.

Pityriasis rosea.Pityriasis rosea begins with an erythematous “herald patch”—a slightly raised, oval lesion about 2 to 6 cm in diameter that may appear anywhere on the body. A few days to weeks later, yellow to tan or erythematous patches with scaly edges appear on the trunk, arms, and legs, commonly erupting along body cleavage lines in a characteristic “pine tree” pattern. These patches may be asymptomatic or slightly pruritic, are 0.5 to 1 cm in diameter, and typically improve with skin exposure.

Polymorphic light eruption.Abnormal reactions to light may produce papular, vesicular, or nodular rashes on sun-exposed areas. Other symptoms include pruritus, headache, and malaise.

Psoriasis.Psoriasis begins with small, erythematous papules on the scalp, chest, elbows, knees, back, buttocks, and genitalia. These papules are sometimes pruritic and painful. Eventually they enlarge and coalesce, forming elevated, red, scaly plaques covered by characteristic silver scales, except in moist areas such as the genitalia. These scales may flake off easily or thicken, covering the plaque. Associated features include pitted fingernails and arthralgia.

Rosacea.Rosacea is characterized by persistent erythema, telangiectasia, and recurrent eruption of papules and pustules on the forehead, malar areas, nose, and chin. Eventually, eruptions occur more frequently and erythema deepens. Rhinophyma may occur in severe cases.

Seborrheic keratosis.With seborrheic keratosis, benign skin tumors begin as small, yellow-brown papules on the chest, back, or abdomen, eventually enlarging and becoming deeply pigmented. However, in blacks, these papules may remain small and affect only the malar part of the face (dermatosis papulosa nigra).

Smallpox (variola major).Initial signs and symptoms of smallpox include a high fever, malaise, prostration, severe headache, a backache, and abdominal pain. A maculopapular rash develops on the mucosa of the mouth, pharynx, face, and forearms and then spreads to the trunk and legs. Within 2 days, the rash becomes vesicular and later pustular. The lesions develop at the same time, appear identical, and are more prominent on the face and extremities. The pustules are round, firm, and deeply embedded in the skin. After 8 or 9 days, the pustules form a crust, and later the scab separates from the skin, leaving a pitted scar. In fatal cases, death results from encephalitis, extensive bleeding, or secondary infection.

Syringoma.With syringoma, adenoma of the sweat glands produces a yellowish or erythematous papular rash on the face (especially the eyelids), neck, and upper chest.

Systemic lupus erythematosus (SLE).SLE is characterized by a “butterfly rash” of erythematous maculopapules or discoid plaques that appears in a malar distribution across the nose and cheeks. Similar rashes may appear elsewhere, especially on exposed body areas. Other cardinal features include photosensitivity and nondeforming arthritis, especially in the hands, feet, and large joints. Common effects are patchy alopecia, mucous membrane ulceration, low-grade or spiking fever, chills, lymphadenopathy, anorexia, weight loss, abdominal pain, diarrhea or constipation, dyspnea, tachycardia, hematuria, headache, and irritability.

Typhus.Initial symptoms of typhus include headache, myalgia, arthralgia, and malaise, followed by an abrupt onset of chills, fever, nausea, and vomiting. A maculopapular rash may be present in some cases.

Other causes

Drugs.Transient maculopapular rashes, usually on the trunk, may accompany reactions to many drugs, including antibiotics, such as tetracycline, ampicillin, cephalosporins, and sulfonamides; benzodiazepines, such as diazepam; lithium; phenylbutazone; gold salts; allopurinol; isoniazid; and salicylates.

» READ BOOK EXCERPT ONLINE »

Source: Nursing: Interpreting Signs and Symptoms, 2007

Rash - Case 9-2: 7-Week-Old Girl: I. Differential Diagnosis
(Pediatric Complaints and Diagnostic Dilemmas)

» READ BOOK EXCERPT ONLINE »

Source: Pediatric Complaints and Diagnostic Dilemmas, 2003

 » Next page: Risk Factors for Barber's rash

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