Prevalence and Incidence of Bell's Palsy
Bell's Palsy: Rare Disease
Bell's Palsy is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Bell's Palsy, or a subtype of Bell's Palsy,
affects less than 200,000 people in the US population.
Ophanet, who are a consortium of European partners,
currently defines a condition rare when if affects 1 person per 2,000.
They list Bell's Palsy as a "rare disease".
More information about Bell's Palsy is available from Orphanet
Bell's Palsy Prevalence: Book Excerpts
Incidence (annual) of Bell's Palsy:
40,000 annual cases in Americans ... see also overview of Bell's Palsy.
Incidence Rate:
approx 1 in 6,800 or 0.01% or 40,000 people in USA [Source statistic for calcuation: "40,000 annual cases in Americans" -- see also general information about data sources]
Incidence extrapolations for USA for Bell's Palsy:
40,000 per year,
3,333 per month,
769 per week,
109 per day,
4 per hour,
0 per minute,
0 per second.
[Source statistic for calculation: "40,000 annual cases in Americans" -- see also general information about data sources]
Prevalance of Bell's Palsy:
This nerve disorder afflicts approximately 40,000 Americans
each year.
(Source: excerpt from NINDS Bell's Palsy Information Page: NINDS)
More Statistics about Bell's Palsy:
Hospitalization statistics
All statistics for Bell's Palsy
Prevalence/Incidence of Bell's Palsy: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Bell's Palsy.
Bell's palsy:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Bell’s palsy blocks the seventh cranial nerve, which is responsible for motor innervation of the muscles of the face. The conduction block is due to an inflammatory reaction around the nerve (usually at the internal auditory meatus), which may be associated with infections or can result from hemorrhage, tumor, meningitis, local trauma, hypertension, sarcoidosis, Lyme disease, or infarction of the nerve.
Bell’s palsy affects all age groups and males and females nearly equally, although females are slightly more likely to develop it during their late teens and early 20s. In the United States, incidence is 23 cases per 100,000 people.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Bell Palsy:
Bell Palsy - epidemiology
(The 5-Minute Pediatric Consult)
Bell Palsy - incidence
Annually, incidences range from 3/100,000 in patients <10 years to 25/100,000 in adults. Only 1% of cases have bilateral involvement.
>
» READ BOOK EXCERPT ONLINE »
Source: The 5-Minute Pediatric Consult, 2008
About prevalence and incidence statistics:
The term 'prevalence' of Bell's Palsy usually refers to the estimated population
of people who are managing Bell's Palsy at any given time.
The term 'incidence' of Bell's Palsy refers to the annual diagnosis rate,
or the number of new cases of Bell's Palsy diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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