Definition of Eyelid myokymia

Eyelid myokymia: Fine continuous contractions of the eyelid muscle, typically involving one of the lower eyelids, less often an upper eyelid. The condition occurs spontaneously, sometimes triggered by stress, fatigue, caffeine or alcohol. In most cases, the condition is benign and ceases of its own accord. See also: Myokymia.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=24636
Last Editorial Review: 10/9/2012