Trigeminal neuralgia and multiple sclerosis. A complex diagnosis.

Trigeminal neuralgia is a well-recognized complication in patients with multiple sclerosis. A case report is presented that describes multiple sclerosis in a middle-aged man with otherwise classical unilateral trigeminal neuralgia who demonstrated a variable response to pharmacologic and surgical intervention. The case highlights the difficulties of diagnosis when trigeminal neuralgia occurs concurrently with multiple sclerosis.