Eye twitching, benign critical blepharospasm and hemifacial spasm are conditions typically used to refer to any of three independent conditions. Every form of twitch or spasm has a distinct trigger.

Eyelid twitching (myokymia) influences only the eyelid. This form of twitch or spasm is extremely widespread and occurs to most persons at 1 time or a further. It can include possibly the upper or lower lid, but normally only 1 eye at a time. The eye twitching can vary from hardly visible to bothersome. The twitching normally goes away in just a short time but may recur more than a few hrs, days or for a longer period.

Benign critical blepharospasm begins out as elevated blinking of both of those eyes and may development to the eyelids becoming squeezed shut. This form of eye twitching is reasonably unheard of but can be exceptionally intense, impacting all elements of life.

Hemifacial spasm requires twitches of muscle groups on 1 aspect of the deal with, which includes the eyelid.