Hence it could be Trigeminal neuralgia, abscess
, exposed root canal, internal ear infection
, maxillary sinusitis, TMJ, migraine, herpes (recurrent) without rash or fibromyalgia localized to face.
It is difficult to comment beyond this at this stage. Do consult your doctor.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!