Which divisions of the trigeminal nerve are most classically affected by trigeminal neuralgia?

Trigeminal neuralgia most commonly involves the maxillary (V2) and mandibular (V3) divisions, producing sharp, electric-shock-like pain in the cheek, jaw, teeth, or gums. The ophthalmic division (V1) is the least commonly affected, which is a classic distinguishing point from other facial pain syndromes.