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Cranial mononeuropathy VII

Definition:
Cranial mononeuropathy VII is a disorder caused by damage to cranial nerve VII, involving drooping of the face and decreased ability to move the face.

Alternative Names:
Neuropathy - facial; facial nerve palsy

Causes, incidence, and risk factors:

Cranial mononeuropathy VII is a mononeuropathy (damage to a single nerve) that involves the seventh cranial (facial) nerve, the nerve that controls movement of the muscles of the face.

This nerve also contributes to sensation in the ear canal and the sense of taste. Isolated facial nerve damage may occur with localized lesions that put pressure on the facial nerve. This type of nerve damage can also be caused by systemic disorders such as HIV infection, sarcoidosis, Lyme disease, or other disorders. It may have no identifiable cause.

Bell's palsy is a disorder involving paralysis of the muscles innervated by the seventh cranial nerve, which is thought to be caused by an infection of the nerve by a herpesvirus.



Review Date: 7/28/2002
Reviewed By: Elaine T. Kiriakopoulos, M.D., MSc, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA. Review provided by VeriMed Healthcare Network.

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