Craniofacial pain of myofascial origin: temporomandibular pain & tension-type headache.

Craniofacial pain of myofascial origin is a common chronic disorder. When the pain is unilateral and located periauricularly, masticatory myalgia is likely. Tension-type headache is usually bilateral and affects the upper part of the head. The possible interrelationship with generalized myofascial disorders are discussed. Practical approaches to history-taking, diagnosis, and treatment are suggested.