6. Trigeminal neuralgia typical and atypical. A disease or two?

Trigeminal Neuralgia (TN) is a clinical condition characterized by a sudden, usually unilateral, brief, stabbing, recurrent pain with a distribution consistent with one or more divisions of the fifth cranial nerve. In the classical form, the genesis of paroxysmal pain has been attributed to areas of focal demyelination due to vascular compression on the nerve. The 20–50% of patients with TN have an atypical form characterized by the presence of constant pain, often described as burning continuous or sub-continuous, as well as paroxysmal pain.

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