T.G. SAKOVETS, E.I. BOGDANOV

Kazan State Medical University, Kazan

Contact details:

Sakovets T.G. — PhD (medicine), Associate Professor of the Department of Neurology and Rehabilitation

Address: 49 Butlerov St., Russian Federation, Kazan, 420012, tel.: +7-917-924-99-79, e-mail: tsakovets@yandex.ru

The purpose — to study of the features of chronic neuropathic facial pain associated with cranial nerve damage.

Material and methods. We studied the modern works on the features of the clinic, diagnosis and treatment of chronic orofacial pain caused the cranial nerves damage. Special attention was paid to the methods of diagnosing neuropathic facial pain of various etiologies, and identifying clinical variants of their course.

Results. The best known and most common variant of neuropathic orofacial pain is trigeminal neuralgia. There are classic trigeminal neuralgia that occurs as a result of vaso-neural conflict, secondary trigeminal neuralgia (in multiple sclerosis, voluminous brain neoplasm, etc.), and idiopathic trigeminal neuralgia. Patients have short-term (from fractions of a second to 2 minutes) unilateral paroxysmal facial pain in classic trigeminal neuralgia. In case of secondary trigeminal neuralgia, mainly bilateral neuropathic pain is detected. Painful trigeminal neuropathy (trigeminal neuropathic pain other than trigeminal neuralgia) is caused by trauma and herpes zoster with acute neuropathic pain. After 3 months, painful manifestations after the herpes zoster are qualified as trigeminal postherpetic neuralgia. Post-traumatic neuropathic trigeminal pain is the result of external trauma or iatrogenic damage resulting from dental treatment or neuroablation procedures. Both classical and secondary, idiopathic neuralgia of the glossopharyngeal nerve is characterized by unilateral short-term stabbing pain in the ear, base of the tongue, tonsil region, posterior part of the pharynx; it is less common, in contrast to trigeminal neuralgia. Intermediate nerve neuralgia was first described in 1907 by Hunt; it is rare, manifests itself as unilateral, shooting, paroxysmal pain in the ear canal and temporal areas. Painful neuropathy of the intermediate nerve (Ramsey — Hunt syndrome) with herpes zoster is characterized by dull, persistent pain that occurs inside the ear canal, auricle or mastoid. Rarely, tumors of the face can be the cause of Ramsey — Hunt syndrome.

Conclusion. Thus, chronic neuropathic facial pain associated with facial nerves damage has a varied etiology, which requires careful differential diagnosis and selection of adequate treatment tactics.

Key words: facial pain, neuropathic pain, cranial nerves damage.

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