title: Chronic pain.
authors.forename: Terrance J
authors.initials: TJ
authors.lastname: Spahl
mesh_terms: D002908:Chronic Disease; D020773:Headache Disorders / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D008959:Models, Neurological; D009473:Neuronal Plasticity / Q000502:physiology*; D010146:Pain / Q000503:physiopathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis / Q000503:physiopathology; D020433:Trigeminal Nerve Diseases / Q000175:diagnosis / Q000503:physiopathology