Atypical Trigeminal Neuralgia (ATN), or Type 2 Trigeminal Neuralgia, is a rare form of Trigeminal neuralgia, a disorder of the fifth cranial nerve. This form of neuralgia is difficult to diagnose, as it is rare and the symptoms overlap with several other disorders. The symptoms can occur in addition to having migraine headache, or can be mistaken for migraine alone, or dental problems such as Temporomandibular joint disorder, musculoskeletal issues, or Hypochondriasis. ATN can have a wide range of symptoms and the pain can fluctuate in intensity from mild aching to a crushing or burning sensation, and also to the extreme pain experienced with the more common trigeminal neuralgia.
