title: Letter: Myofascial pain dysfunction syndrome.
mesh_terms: D005152:Facial Muscles; D006801:Humans; D008410:Masticatory Muscles; D009135:Muscular Diseases / Q000503:physiopathology*; D010146:Pain; D013577:Syndrome; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000503:physiopathology