My lower eyelid has been twitching for 4 days what could this mean?

Eye twitch. In the lids there exists a muscle that is called mueller's muscle. It responds to your circulating adrenaline, whose production by the body happens in response to stress. Local conditions such as cysts, concretions (calcium deposit) may be a physical cause that may induce mueller;s muscle to twitch. To stop it eliminate the cause of it, see your eye doc (ophthalmologist), .