Trigeminal neuralgia epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
TN is a rare condition that affects women more than men. The annual incidence of TN is 4 to 13 per 100,000 people. Despite its low incidence, numbers may be significantly higher due to frequent misdiagnosis. TN is one of the more frequently seen neuralgias in the older adult population. The incidence increases gradually with age; most idiopathic cases begin after age 50, although onset may occur in the second and third decades or, rarely, in children.
The male-to-female prevalence ratio of TN ranges from 1:1.5 to 1:1.7. This female predominance may be related to the increased longevity of women compared with men. Rare familial cases have been reported, but the vast majority of patients have sporadic disease.