Eye twitching
Definition
By Mayo Clinic Staff
Eye twitching, eyelid spasm and blepharospasm are terms used to refer to any of three separate conditions. They each have different causes, and one doesn't lead to the other.
Eyelid twitching (myokymia) affects only the eyelid. It can involve either the upper or lower lid, but only one eye at a time. The eye twitching can range from barely noticeable to bothersome. The twitching usually goes away within a short time but may recur over a few hours, days or longer.
https://www.mayoclinic.org/symptoms/eye-twitching/basics/definition/sym-20050838
