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Eye Twitching

Eye twitching is a repetitive, uncontrollable blinking or spasm of the eyelid, usually the upper lid.

Eye twitching (blepharospasm) usually affects the eye muscles of both eyes. If you have eye twitching, you may have an involuntary movement that recurs every several seconds for a minute or two.

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Most people develop a minor eyelid twitch at some point in their lives. Although the cause is generally unknown, it may be associated with:

This minor form of twitch is painless and harmless. It usually goes away on its own. But it can be quite annoying. And that's especially true if the spasms are strong enough to cause the eyelids to completely shut and then reopen.

In some cases eye twitching is more than a temporary nuisance. Some people have spasms that occur frequently throughout the day. Symptoms can recur for days, weeks, or even months. That can cause a lot of emotional distress. It can interfere with quality of life.

In its most serious forms, which are relatively uncommon, eye twitching can become chronic. It can cause persistent winking and squinting. If it progresses to the point where you have difficulty keeping your eyes open, it can cause severe vision impairment.

Sometimes, eye twitching can be a sign of eye conditions such as:

Very rarely, it can be a sign of a brain or nerve disorder, such as:

Eye twitching can also be a side effect of certain medications. The most common offenders include drugs used in the treatment of psychosis and epilepsy.

Types of Eye Twitching

There are three common types of eye twitch:

  • Minor eyelid twitch
  • Benign essential blepharospasm
  • Hemifacial spasm

Minor eyelid twitch is often associated with lifestyle factors, such as:

Minor eyelid twitch also can be caused by irritation of the surface of the eye (cornea) or the membranes lining the eyelids (conjunctiva).

Sometimes the cause of minor eyelid twitch cannot be identified. In almost all cases it is painless and harmless.

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