Facial pain can be caused by conditions like trigeminal neuralgia, migraines, post-herpetic neuralgia, and temporomandibular arthritis. Trigeminal neuralgia causes sharp, stabbing pain on one side of the face and is often triggered by mundane activities like washing, shaving, or talking. It is commonly treated with medications or microvascular decompression surgery. Post-herpetic neuralgia is nerve pain that develops after a shingles outbreak and is confined to the affected dermatome. Temporomandibular arthritis, also called Costen's syndrome, produces severe aching pain in the jaw worsened by chewing and is linked to dental issues. Diagnosis