Definition. Atypical Facial Pain (AFP, also termed atypical facial neuralgia, chronic idiopathic facial pain, or psychogenic facial pain), is a type of chronic facial pain which does not fulfill any other diagnosis. Best explanation: http://en.wikipedia.org/wiki/Atypical_facial_pain. See TMJ-orofacial pain doc for management.
Neuro disorder. It is a neurological disorder. There are no sores in the mouth. It is typically continuous pain that can feel like a tooth ache with no signs of a tooth problem.. It can also seem like a muscle pain. It is best diagnosed and treated with the help of an orofacial pain specialist who can rule-out other things that can feel like atypical facial pain.
Not typical . Atypical facial pain is an unrecognized and unhelpful diagnosis but one which describes chronic pains that do not fit the present classification system. http://www.hopkinsmedicine.org/neurology_neurosurgery/specialty_areas/headache/conditions/atypical_facial_pain.html or http://en.Wikipedia.Org/wiki/atypical_facial_pain.