Hemifacial spasm is a condition in which the facial muscles spasm abnormally, usually starting around the eye and spreading to half the face. Although the disease is not life-threatening, it greatly affects the patient's psychology and aesthetics.

Hemifacial spasm is a condition in which one half of your face is affected. It usually starts with twitching around one eye. Although it is not a serious condition, it can be disruptive to your daily life.

Hemifacial spasm is an involuntary, intermittent, painless twitching of the muscles innervated by the VII nerve on one side of the face.

In daily life, sometimes the eyes blink a little when concentrating too much on something or the eyes are tired, that is the blinking habit. Hemifacial spasm means that the patient will have eye muscle spasms, then gradually spread to the mouth muscles, cheek muscles and neck muscles, the spasms occur continuously, continuously.