Woman who was brushing her teeth and experienced general discomfort. Describes a sharp, electric, shock-like pain. Diagnosis:

Correct answer: A. Trigeminal neuralgia (tic douloureux)

• A. Correct. Sharp, electric, shock-like pain triggered by light stimulation (such as brushing teeth/touching the face) is the classic hallmark of trigeminal neuralgia.
• B. Migraine produces throbbing pain over hours, not brief electric shock-like episodes triggered by touch.
• C. Cluster headache produces severe unilateral periorbital pain in cyclical attacks, not specifically triggered by touch/brushing.
• D. TMJ disorder produces pain with jaw movement/function, not classically described as sharp electric shocks triggered by brushing.