A trigeminal nerve tumor grows along the largest nerve that feeds the face. Because the nerve has three branches, symptoms show up in different zones of the cheek, jaw, or forehead. The first red flag is face pain that feels like electric shocks. It may last seconds or minutes and is often triggered by brushing teeth, a cool breeze, or smiling. Numbness or tingling follows. Parts of the cheek, lips, or tongue can feel “asleep,” making it hard to notice hot drinks or accidental bites. Chewing weakens. The jaw tires halfway through a meal, and you may hear clicks as... Learn more