A<unk>  ('eye twitching') is any abnormal tic or twitch of the eyelid (from blepharo, eyelid, and spasm, an uncontrolled muscle contraction). However, it is normally distinguished from less serious disorders and refers to Benign Essential<unk> , a focal dystonia (a neurological movement disorder involving involuntary and sustained muscle contractions) of the muscles around the eyes. The cause is often undetermined, but fatigue or a an irritant are possible contributing factors.  Symptoms usually last for a few days then disappear without treatment, but in some cases the twitching is chronic and persistent. Occasionally, the symptoms are severe enough to result in effective blindness.
Blepharospasm
Antlophobia
Oscillopsia
Coccydynia
Otalgia
Borborygmus
Proctalgia fugax
Carotidynia