Prevalence and Incidence of Sweet Syndrome
Sweet Syndrome: Rare Disease
Sweet Syndrome is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Sweet Syndrome, or a subtype of Sweet Syndrome,
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 Sweet Syndrome as a "rare disease".
More information about Sweet Syndrome is available from Orphanet
About prevalence and incidence statistics:
The term 'prevalence' of Sweet Syndrome usually refers to the estimated population
of people who are managing Sweet Syndrome at any given time.
The term 'incidence' of Sweet Syndrome refers to the annual diagnosis rate,
or the number of new cases of Sweet Syndrome 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.