Tic douloureux
Magnetic resonance imaging (MRI) and blood tests may help rule out other conditions.
Kanai A, Saito M, Hoka S. Subcutaneous sumatriptan for refractory trigeminal neuralgia. Headache. 2006;46(4):577-582.
Goetz CG, ed. Textbook of Clinical Neurology. 3rd ed. Philadelphia, Pa: WB Saunders; 2007.