The classic form of tardive dyskinesia begins generally in the lower face -- mouth, tongue ... After a patient presents with ...

Simple stereotypies involve only one body part, such as the mouth or hand, whereas complex stereotypies affect more ... (dance-like movements flowing randomly from body part to body part), dystonia ...

These movements are involuntary, meaning they are out ... one side of the face and usually involves other muscles, such as the cheek or mouth. Currently, the exact cause of BEB is unknown.

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching on one side of the face due to involuntary contractions of the eyelid and other facial muscles. It usually begins gradually ...