The International Headache Society classifies cervicogenic headache as a secondary headache caused by a disorder of the cervical spine and its components. Mulligan Concept (SNAG) is a gentle manual therapy that can be applied to the neck area. The myofascial release technique is also a massage-type manual therapy technique that is widely used in physiotherapy to relieve pain and tension in the relevant muscle group.

This clinical trial aims to investigate the effectiveness of the Mulligan Concept and myofascial release technique in patients with cervicogenic headaches. The main questions it aims to answer are:

1. Does the Mulligan Concept improve hand grip strength, pressure pain threshold, range of motion, pain frequency, pain intensity, pain duration, number of medications used, daily living activities, and disability in patients with cervicogenic headache?
2. Does myofascial release technique improve hand grip strength, pressure pain threshold, range of motion, pain frequency, pain intensity, pain duration, number of medications used, daily living activities, and disability in patients with cervicogenic headache?

Researchers will compare the Mulligan Concept to a myofascial release technique to see which physiotherapy method has more significant results in treating cervicogenic headaches.

Participants will:

• Undergo the evaluations mentioned above before and after interventions
• Undergo Mulligan Concept applications or the myofascial release technique 3 times a week for 4 weeks
• Keep a diary of their symptoms and the number of times they use a drug

Although headache is one of the most common neurological symptoms, it is still not fully recognized and treated worldwide. The International Headache Society divides headaches into primary and secondary categories. The International Headache Society classifies cervicogenic headache as a secondary headache caused by a disorder of the cervical spine and its components. The prevalence in the general population is estimated to be approximately 0.17% to 4.1%.

Cervicogenic headache features are as follows;

1. observed in adulthood,
2. unilateral and does not change sides,
3. radiating from the back of the head and neck to the ear and cheekbone,
4. can be triggered mechanically by maneuvers,
5. characterized by compressive pain that starts seconds or 30 minutes after the maneuver and lasts for several days to weeks

The diagnostic criteria for cervicogenic headache are as follows:

1. The headache developed at a time similar to the onset of the cervical disorder or the appearance of the lesion
2. The headache has significantly decreased or disappeared in parallel with the regression or complete healing of the cervical disorder or lesion
3. The cervical range of motion is reduced and the headache worsens significantly with stimulating maneuvers
4. The headache disappears after the cervical structure or nerve source is blocked for diagnosis

Studies show that physiotherapy and rehabilitation approaches such as manual therapy, exercise training, and dry needling are effective in treating headaches.

Studies have shown that people with cervicogenic headaches have a high rate of C1-C2 dysfunction. The mechanism of Mulligan's movement mobilization technique (SNAG) is based on the correction of joint position. Mulligan's SNAG technique is a gentle manual therapy method. Some studies have shown that Mulligan mobilization increases the range of motion and significantly reduces pain intensity and frequency in patients with cervicogenic headaches

Another form of massage-type manual therapy, myofascial release, is widely used in clinical practice. Previous studies have found that active myofascial trigger points often trigger tension-type headaches and migraines with palpation. Therefore, treatment of these myofascial trigger points may be an effective headache management.

In light of the literature data, this study aims to investigate and compare the effectiveness of physiotherapy methods such as Mulligan Concept applications and myofascial release technique on hand grip strength, pressure pain threshold, range of motion, pain frequency, pain intensity, pain duration, number of medication use, daily living activities and disability in patients with cervicogenic headache.

Hypotheses of this study are;

H0: There is no significant difference in favor of myofascial release technique or Mulligan concept applications in terms of pressure pain threshold, neck joint range of motion, handgrip strength, pain intensity, frequency and duration, number of medications used, disability and daily living activities between myofascial release technique and Mulligan concept applications in cervicogenic headache.

H1: There is a significant difference in favor of myofascial release technique between myofascial release technique and Mulligan concept applications in terms of pressure pain threshold, neck joint range of motion, handgrip strength, pain intensity, frequency and duration, number of medications used, disability and daily living activities between myofascial release technique and Mulligan concept applications in cervicogenic headache.

H2: There is a significant difference in favor of Mulligan concept applications between myofascial release technique and Mulligan concept applications in terms of pressure pain threshold, neck joint range of motion, handgrip strength, pain intensity, frequency and duration, number of medications used, disability and daily living activities.

To determine whether the physiotherapy approach produces greater significant outcomes for treating cervicogenic headaches, researchers will compare the Mulligan Concept with a myofascial release technique.

The 40 individuals, consisting of women and men, who will participate in the study will be randomly divided into two groups. These groups will consist of individuals who receive the myofascial release method or the Mulligan concept technique. After the initial evaluations, both groups will be applied to a 4-week treatment program consisting of 3 sessions per week and the evaluations will be repeated at the end of the 4 weeks. The researcher who makes the evaluations will not know which treatment the individuals received, in other words, will be blind to the groups.

The participants will be evaluated on their neck joint range of motion, pressure pain threshold, hand grip strength, headache and functionality, and disability due to neck problems. In addition, they will be evaluated on their pain frequency, intensity, and duration. Participants will keep a diary of their symptoms and the number of times they use a medication.

Inclusion Criteria:

• Having been diagnosed with cervicogenic headache according to the International Classification of Headache Disorder-III diagnostic criteria
• Having been diagnosed with cervicogenic headache for more than 3 months
• Having a headache accompanying neck pain
• Having restricted neck joint movement according to the Flexion-Rotation Test
• Having pain between 3 and 8 according to the Visual Analog Scale
• Being between 25-60 years of age
• Agreeing to participate in the study voluntarily

Exclusion Criteria:

• Previous cervical surgery
• Previous cervical trauma
• Having received diagnosis-related physiotherapy in the last 6 months
• Diagnosis of tumor or cancer
• Having other types of headache
• Serious cardiovascular, cerebrovascular, hematological, metabolic, neurological or mental disease
• Being pregnant or breastfeeding
• Having red flags for manual therapy
• Dizziness with headache, visual disturbance
• Congenital cervical disorder
• Rheumatoid arthritis, cervical spondylolisthesis, cervical instability, infection

The researcher who makes the evaluations will not know which treatment the individuals received, in other words, will be blind to the groups.