Hemifacial spasms happen when the muscles on only one side of your face twitch without warning. These types of spasms are caused by damage or irritation to the facial nerve, which is also known as the seventh cranial nerve. Facial spasms occur when the muscles contract involuntarily because of this nerve irritation. Hemifacial spasms are also known as tic convulsif.
Facial Tic Disorder: Causes, Contributing Factors, and Treatments
Hemifacial spasm HFS is an involuntary twitching or contraction of the facial muscles on one side of the face. Medication, surgery, and Botox injections are treatment options to stop the spasms and relieve the discomfort. Each treatment offers benefits, but each has limitations. You and your doctor should determine which treatment is best. Hemifacial spasm also called tic convulsif is an involuntary twitching of the facial muscles on one side of the face. The facial muscles are controlled by the facial nerve seventh VII cranial nerve , which originates at the brainstem and exits the skull below the ear where it separates into five main branches Fig. The facial nerve is primarily a motor nerve, meaning it controls muscles that move the eyebrows, close the eyes, and move the mouth and lips.
The National Institute of Neurological Disorders and Stroke NINDS conducts and supports research related to hemifacial spasm through grants to major research institutions across the country. Much of this research focuses on better ways to prevent, treat, and ultimately cure neurological disorders, such as hemifacial spasm. Hemifacial spasm is a neuromuscular disorder characterized by frequent involuntary contractions spasms of the muscles on one side hemi- of the face facial. The disorder occurs in both men and women, although it more frequently affects middle-aged or elderly women.
A facial tic is an involuntary, uncontrolled spasm in the facial muscles. The tic is unwanted and generally occurs regularly enough to be a nuisance to the person who experiences it. A person can hold in a tic temporarily, in a similar way to holding in a sneeze, but doing so often makes the person increasingly uncomfortable. A few different disorders can cause facial tics, but most of the time facial tics do not indicate a severe medical condition.