For a diagnosis of Narcolepsy, the following list of conditions have been mentioned in sources as possible alternative diagnoses to consider during the diagnostic process for Narcolepsy:
The other diseases for which Narcolepsy is listed as a possible alternative diagnosis in their lists include:
Causes of Narcolepsy may include these medical conditions:
Related medical mistakes may include:
Commonly undiagnosed conditions in related areas may include:
Although narcolepsy is not a rare disorder, it is often misdiagnosed or diagnosed only years after symptoms first appear. Early diagnosis and treatment, however, are important to the physical and mental well-being of the affected individual. (Source: excerpt from NINDS Narcolepsy Information Page: NINDS)
Narcolepsy is often mistaken for depression, epilepsy, or the side effects of medications. (Source: excerpt from Narcolepsy: NWHIC)
Undiagnosed stroke leads to misdiagnosed aphasia: BBC News UK reported on a man who had been institutionalized and treated for mental illness because he suffered from sudden inability to speak. This was initially misdiagnosed as a "nervous breakdown" and other mental conditions. He was later diagnosed as having had a stroke, and suffering from aphasia (inability to speak), a well-known complication of stroke (or other brain conditions).
Dementia may be a drug interaction: A common scenario in aged care is for a patient to show mental decline to dementia. Whereas this can, of course, occur due to various medical conditions, such as a stroke or Alzheimer's disease, it can also occur from a side effect or interaction between multiple drugs that the elderly patient may be taking. There are also various other possible causes of dementia.
RLS sleep disorder causing night-time leg sensations often misdiagnosed: A common but relatively unknown sleep-related disorder called Restless Leg Syndrome (RLS) is often misdiagnosed. The typical symptoms are night-time tingling, crawling, or burning sensations in the legs, with the irresistable urge to move the legs. This need for leg movement leads to tossing and turning, or getting up out of bed, all of which interferes with the ability to fall asleep. The sufferer then has the typical symptoms of sleep deprivation during the day: fatigue, tiredness, morning headaches, irritability, poor concentration and so on. This condition is sometimes misdiagnosed as other conditions such as ADHD, sleep disorders, other causes of insomnia, or other causes of leg tingling. Many patients also suffer from a related disorder called Periodic limb movement disorder (PLMD), which causes leg spasms or other jerky movements. See introduction to RLS or introduction to PLMD.
Mild traumatic brain injury often remains undiagnosed: Although the symptoms of severe brain injury are hard to miss, it is less clear for milder injuries, or even those causing a mild concussion diagnosis. The condition goes by the name of "mild traumatic brain injury" (MTBI). MTBI symptoms can be mild, and can continue for days or weeks after the injury. See the symptoms of MTBI or misdiagnosis of MTBI.
MTBI misdiagnosed as balance problem: When a person has symptoms such as vertigo or dizziness, a diagnosis of brain injury may go overlooked. This is particularly true of mild traumatic brain injury (MTBI), for which the symptoms are typically mild. The symptoms has also relate to a relatively mild brain injury (e.g. fall), that could have occurred days or even weeks ago. Vestibular dysfunction, causing vertigo-like symptoms, is a common complication of mild brain injury. See causes of dizziness, causes of vertigo, or misdiagnosis of MTBI.
Brain pressure condition often misdiagnosed as dementia: A condition that results from an excessive pressure of CSF within the brain is often misdiagnosed. It may be misdiagnosed as Parkinson's disease or dementia (such as Alzheimer's disease). The condition is called "Normal Pressure Hydrocephalus" (NPH) and is caused by having too much CSF, i.e. too much "fluid on the brain". One study suggested that 1 in 20 diagnoses of dementia or Parkinson's disease were actually NPH. See misdiagnosis of Alzheimer's disease or misdiagnosis of Parkinson's disease.
Post-concussive brain injury often misdiagnosed: A study found that soldiers who had suffered a concussive injury in battle often were misdiagnosed on their return. A variety of symptoms can occur in post-concussion syndrome and these were not being correctly attributed to their concussion injury. See introduction to concussion.
Children with migraine often misdiagnosed: A migraine often fails to be correctly diagnosed in pediatric patients. These patients are not the typical migraine sufferers, but migraines can also occur in children. See misdiagnosis of migraine or introduction to migraine.
Rare types of medical disorders and diseases in related medical areas:
The following medical news items are relevant to misdiagnosis of Narcolepsy:
Read these general articles with an overview of misdiagnosis issues.
When checking for a misdiagnosis of Narcolepsy or confirming a diagnosis of Narcolepsy, it is useful to consider what other medical conditions might be possible misdiagnoses or other alternative conditions relevant to diagnosis. These alternate diagnoses of Narcolepsy may already have been considered by your doctor or may need to be considered as possible alternative diagnoses or candidates for misdiagnosis of Narcolepsy. For a general overview of misdiagnosis issues for all diseases, see Overview of Misdiagnosis.
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