Trigeminal neuralgia (tic douloureux) most commonly affects which trigeminal division(s)?

Trigeminal neuralgia most commonly affects V2 (maxillary) and V3 (mandibular) divisions, or V3 alone. V1 (ophthalmic) involvement is the least common. The classic presentation is brief, electric shock-like, unilateral lancinating pain in the cheek, jaw, teeth, gums, or lips, triggered by light touch (trigger zones). The V2/V3 distribution makes it appear dental in origin, causing diagnostic confusion.