The individuals in the electroacupuncture group were administered the therapy by a certified acupuncturist. Two Shenlong acupuncture needles were inserted in each of the trapezius and levator scapulae muscles at intervals of 0-3 mm and clips were attached to their ends. Afterwards, an electrical current of 2 mA and 60 Hz was administered using the Enraf Nonius Sonoplus 492 (OPTOMED) device for 20 minutes.

Firstly, longitudinal stretching was done with forearm to the muscles in the person's neck in order to relax. Afterwards, the researcher placed one hand under the person's head and placed their fingertips on the muscles under the occipital bone in the neck area. The researcher applied lateral flexion to the neck with one hand while placing the other hand on the trapezius and levator scapulae muscles and then stretched the muscles with friction massage. After this step, the participant's neck was guided back into a neutral position and the pinching technique was applied to the muscles. During the administration of therapies, the trigger points on muscles were identified and friction was applied to these sites until a loosening could be felt. The myofascial release sessions concluded with the administration of the friction massage technique once again to the muscles.

An electrical current of 2 mA and 60 Hz was administered using the Enraf Nonius Sonoplus 492 (OPTOMED) device for 20 minutes. All the treatments were performed for 2 sessions per week for 3 weeks. Both groups were given a home program involving neck stretching and posture exercises. The exercises were to be performed at least two times a day in two sets of fifteen repetitions.

VAS, is used to evaluate the intensity of pain, using a scale comprised of a 100-mm-long horizontal line and ending with at both ends by descriptors of pain intensity beginning with "no pain" to "extreme pain. Patients are asked to indicate their levels of pain on this range by placing a dot on the line

Headache diary (HD): Patients kept an HD for three weeks to record the clinical features of their headaches. In this diary, subjects documented the number of days per week that they experienced a headache, the duration of each headache (hour/day), and the headache intensity on a 5-point numerical pain rating scale (0: no pain, 5: maximum pain). For each subject, Headache index (HI) was calculated for the first and last ten days of the intervention period as following:

Headache index (HI) = mean headache intensity X mean number of days with headache X mean duration of headache

The join ROM of the neck was measured via C-ROM goniometer which consists of two inclinometers for gravity on the sagittal and frontal planes, an inclinometer with magnetic needles that is inserted from above on the horizontal plane, a magnetic cervical collar, an arm with a ruler in cm units and a vertebral fixating arm with a balance system. This device has a plastic frame with a shape that is similar to a pair of glasses, as it rests on the nose and ears. During all measurements, the subjects were asked to sit on a chair with their arms held close to their bodies. Subjects were asked to look forward in a comfortable sitting position for the performance of the measurements. The initial position of each movement was set an angle of 0 degrees. The measurements were conducted while the subjects performed forward/backward bending, left/right side-bending and rotation movements on the left and right sides of the neck.