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