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