Blepharospasm

Last revised by Henry Knipe on 11 Sep 2023

Blepharospasm is a type of focal dystonia where there is involuntary eyelid closure due to overactivity of muscles around the eyes, particularly orbicularis oculi.

The prevalence of blepharospasm is 32 per 100,000 population with males more often affected than females (M:F = 3:2) 5.

  • primary/essential

    • more common

    • cause unable to be identified (diagnosis of exclusion) 5

  • secondary

    • cause can be established such as 1

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