Fatigue-induced blepharospasm alone is usually a spasm following stress or exertion or irritation that resolves with rest and is non-persistent; facial dystonia is an intermittent twitching of the eyelid and facial muscles on one side that lasts for a long time and is not relieved by rest, and is seen on nuclear magnetic angiography with positive vascular compression of the lateral nerve root and lateral diffusion potentials of the facial nerve; whereas Meige syndrome is mostly a bilateral blepharospasm that gradually worsens, with or without orofacial-jaw dystonia.