Less movement, prolonged sitting or standing and conditions like varicose veins can reduce blood flow to muscles, increasing the risk of spasms, adds Dr. Tolentino. Some common medications ...

When the facial nerve malfunctions or is damaged, it can trigger involuntary facial twitches associated with hemifacial spasms. For example, if a blood vessel presses against the seventh nerve ...

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching ... However, HFS is often attributable to an irritation or a compression of the facial nerve by a blood vessel as it exits ...