Study aim: comparison of the effects of suboccipital myofascial release and diaphragm myofascial release on pain intensity and frequency and quality of life in patients with symptomatic tension-type headache aged 18-40 years. Design: a controlled, double group, single blinded(assessor), randomized(randomizer site), phase 3 clinical trial on 22 patients. Settings and conduct: The study is carried out at Shiraz's school of rehabilitation sciences, comparing the effects of added value of diaphragm myofascial release and sub-occipital release on tension type headache. Manual techniques are applied thrice a week for 2 weeks. blinding of evaluator is maintained by separating treatment and assessment roles. Participants/Inclusion and exclusion criteria: Age range: 18 to 40 years, Headache lasting from 30 min to 7 days, At least two of the following pain characteristics: 1. Bilateral location 2. Pressing or tightening (non-pulsating) quality 3. Mild or moderate intensity 4. Not aggravated by routine physical activity, such as walking or climbing stairs Both of the following: 1. No nausea, vomiting (anorexia can occur) 2. No more than one of photophobia or phonophobia not attributed to another disorder People with CTTH who had headache for at least 3 days in a week for the past four Consecutive weeks (48). tenderness over the suboccipital region (88) and diaphragm Intervention groups: one of the intervention groups will receive suboccipital muscle release and diaphragm, and the other group will receive sub-occipital release only. Main outcome variables: pain intensity, pain frequency, quality of life