This paper discusses a relatively common myofascial pain syndrome. Despite its commonness, it is frequently misdiagnosed and patients may be subjected to many forms of treatment without relief. Some of these treatments may be mutilating, or may produce complications which add to the patient's discomfort. It is therefore suggested that competent dental advice should be sought in all cases of atypical facial pain, and that pain clinics should include a dentist as a member of the team.