Final answer:
The symptoms suggest trigeminal neuralgia, with sinus headache, migraine headache, and tension headache as possible differential diagnoses.
Step-by-step explanation:
The symptoms described by the 70-year-old woman are consistent with a condition called trigeminal neuralgia, also known as tic douloureux. Trigeminal neuralgia is characterized by severe, sudden, and shooting pain in the areas supplied by the trigeminal nerve, which includes the nose, cheek, lower eyelid, upper lip, upper jaw, teeth and gums, lower jaw, teeth and gums, and lower lip. The condition is typically caused by compression or irritation of the trigeminal nerve root by a blood vessel.
Three differential diagnoses for the patient's symptoms could include sinus headache, migraine headache, and tension headache. Sinus headaches can cause pain in the cheeks and forehead, migraines are characterized by severe pain on one or both sides of the head, and tension headaches are triggered by muscle tension in the face and neck.