![]() This is the most common form of the condition. Over time it spreads to the whole eyelid and down to the muscles around the lip and eventually in the cheekbone. This is where the twitching starts at the lower eyelid. There are two forms of this disease typical and atypical Typical hemifacial spasm Sometimes, however, there is no clear cause. An untreated tumor could also be the cause, although this is infrequent. These include muscles that move the eyebrows, eyes, nose, cheeks, mouth and lips.Ī hemifacial spasm also is known as ‘tic convulsif’ comes about when the facial nerve is irritated. As such, it is responsible for the movement of muscles on the face. Here, it splits into 5 different branches. It begins at the brainstem and goes all the way to the skull below the ear. Muscles on your face are controlled by the 7 th cranial nerve which is the facial nerve. Having spasms on both sides of the face or having both cheeks twitching is a rare condition. Hemi means “one side” and facial obviously refers to the face. That is why it is known as a hemifacial spasm. Waking up one day and finding that half your face is attempting to form a revolution can be unnerving and frustrating, especially if you didn’t know why.įacial twitching usually doesn’t affect the entire face, but instead only half of it. ![]()
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