title: On atypical facial pain.
mesh_terms: D003674:Defense Mechanisms; D003937:Diagnosis, Differential; D005145:Face; D005156:Facial Neuralgia / Q000175:diagnosis; D006801:Humans; D010146:Pain / Q000209:etiology*; D011618:Psychotic Disorders / Q000150:complications*; D013375:Substance Withdrawal Syndrome; D014277:Trigeminal Neuralgia / Q000175:diagnosis