Excessive, Involuntary Blinking — Blepharospasm
Blepharospasm is excessive, involuntary blinking. Benign essential blepharospam, refers to this spasm in both eyes. Benign means the condition isn't life-threatening and essential means that it is of unknown cause.
Some patients with blepharospasm may have associated twitching (dystonias) of the face and neck.