The most common reasons for eye twitching include fatigue, stress, excessive caffeine intake, and sometimes alcohol. Eye twitching is an involuntary, abnormal blinking or spasm of the eyelid muscles, often linked to being tired or stressed. Environmental factors such as bright lights, eye irritation, or strain may also trigger twitching. While occasional eye twitches are common and benign, persistent or severe twitching could indicate other conditions such as benign essential blepharospasm, hemifacial spasm, or rarely, neurological disorders like Parkinson's disease or multiple sclerosis. Typically, these twitches resolve on their own, but if the twitching is frequent, affects other parts of the face, or causes eyelid closure, medical consultation is advised. Common triggers include stress, lack of sleep, caffeine consumption, eye strain, and irritation of the eye's surface.