Is temporal muscle treatment useful in episodic tension-type headache?

INTERVENTION: We have many patients with tension‐type headache. We are studying the relationship between the temporomandibular joint (TMJ) an the episodic tension‐type headache. We have the approval of an ethics committee to apply myofascial therapy in our experimental group and a sham therapy in our control group. Patients would be blind to treatment, as well as evaluators. The intervention will last 3 weeks (20 minute per session, one session per week). Treatment consists on pressuring the four myofascial trigger point of the temporalis muscle using an algometer. The same physiotherapist will treat all patients in a physiotherapy clinic. So our independent variables are group and time. Our dependent variables are: algometry in different trigger points, range of movement of neck muscles and TMJ, the SF36 (Health questionnaire), and Check Oral Behavioral List. CONDITION: episodic tension‐type headache;temporomandibular disorders; ; episodic tension‐type headache ; temporomandibular disorders Musculoskeletal ‐ Other muscular and skeletal disorders Physical Medicine / Rehabilitation ‐ Physiotherapy PRIMARY OUTCOME: Range of movement of TMJ: mouth opening, mouth maximum opening, protraction, left lateralization and right lateralization. This range of motion will be measured with a Therabite.[Baseline and 3 weeks post‐intervention] Algometry in different muscle trigger points (TP): Temporal (4 TP), Masseter (3 TP), Digastric (2 TP), Masseter (3 TP), Trapezius (2 TP), Trapezius (2 TP), Levator scapulae (1 TP), Head semispinosus (2TP), sternocleidomastoid (2TP) and obliquus capitis superior (2TP).[Baseline and 3 weeks post‐intervention] Range of movement of neck muscles: neck flexion, extension, left rotation, right rotation, left inclination and right inclination. All range of motions will be measured with a goniometer,[Baseline and 3 weeks post‐intervention] SECONDARY OUTCOME: jaw overuse behaviors (awake and slept) assessed using the Oral Behaviours Checklist[Baseline and 3 weeks post‐intervention] Quality of life measured using SF36 questionnaire[Baseline and 3 weeks post‐intervention] INCLUSION CRITERIA: People with episodic tension‐type headache