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Prevalence and Incidence of Nevus sebaceous of Jadassohn

Nevus sebaceous of Jadassohn: Rare Disease

Nevus sebaceous of Jadassohn is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Nevus sebaceous of Jadassohn, or a subtype of Nevus sebaceous of Jadassohn, 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 Nevus sebaceous of Jadassohn as a "rare disease". More information about Nevus sebaceous of Jadassohn is available from Orphanet

About prevalence and incidence statistics:

The term 'prevalence' of Nevus sebaceous of Jadassohn usually refers to the estimated population of people who are managing Nevus sebaceous of Jadassohn at any given time. The term 'incidence' of Nevus sebaceous of Jadassohn refers to the annual diagnosis rate, or the number of new cases of Nevus sebaceous of Jadassohn 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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