Eye twitching is a medical condition that causes involuntary rhythmic contractions of the eye muscles. Sometimes referred to as eyelid twitching, this condition can be caused by various reasons, including fatigue, stress, caffeine, or other underlying medical conditions. There are several synonyms for eye twitching, including eye spasms, eyelid spasms, blepharospasm, and involuntary eyelid blinking. Eye spasms and eyelid spasms specifically describe the involuntary muscle contractions around the eye area, while blepharospasm refers to a condition of severe eye twitching that may cause the eyelids to remain closed for longer periods of time. Involuntary eyelid blinking, on the other hand, is a more general term used to describe any unintended reflex movement of the eyelids.