Behavioral & Cognitive Disorders
Aug. 15, 2021
Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
Essential (solid red) and spillover (stippled red) referred pain from the 4 primary trigger points (x's) within the masseter refer pain to: (A) the upper molar teeth, adjacent gums and maxilla, with the maxillary pain often described as sinusitis; (B) the lower molars and mandible, which may cause tooth hypersensitivity; (C) from the angle of the mandible, supraorbitally and to the lower jaw; (D) to the lateral cheek and TMJ, and often deep into the ear, causing ipsilateral tinnitus from referred motor unit activity of the stapedius muscle of the tympanic membrane. (From: Travell JG, Simons DG. Myofascial pain and dysfunction, masseter muscle, the trigger point manual. Volume 1. Baltimore: Williams & Wilkins, 1983:220, with permission.)