bleph·a·ro·spasm (bl f  -r -sp z m)n. Spasmodic winking caused by the involuntary contraction of an eyelid muscle. |
blepharospasm
[blef′ərōspaz′əm]
Etymology: Gk, blepharon, eyelid, spasmos, spasm
the involuntary contraction of eyelid muscles. The condition may be caused by a local lesion of the eye, a neurologic irritation, or psychologic stress.
blepharospasm
spasm of the orbicularis oculi muscle of the eyelid.
blepharospasm
Tonic or chronic spasm of the orbicularis oculi muscle which involves involuntary closure of the eyelids. It is often provoked by a foreign body in the eye, an abrasion or inflammation of the cornea or conjunctiva, or by excessive exposure to ultraviolet light (e.g. actinic keratoconjunctivitis). Treatment consists chiefly of injection into the muscles around the eyelids of botulinum toxin. See botulinum toxin; chemodenervation; actinic keratoconjunctivitis; orbicularis muscle.
blepharospasm
Neurology A focal dystonia consisting of the involuntary twitching of one or both eyelids; the spasms may completely close the eyelids, causing functional blindness even if the vision is normal Etiology Related to emotional
stress, sleep deprivation or use of stimulants–eg, amphetamines, caffeine, nicotine, decongestants
Patient discussion about blepharospasm.
Q. eyelids what causes your eye lids too twitch? my left eye lid has been twitching on and off for about a week what causes it and how can i get it to stop.
A. Not an answer, just another question - how long can this go on? My eyelid has been twitching, (likely lack of sleep) for almost a month now. Any treatment that I should seek?
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