Effects of Strain Counterstrain Versus Post Isometric Relaxation on Pain, Headache Frequency, and Quality of Life in Females With Cervicogenic Headache.

Cervicogenic Headache

Cervicogenic Headache, Headache Frequency, Headache related quality of life, Pain intensity, Strain- counterstrain

Cervicogenic headache is a secondary headache disorder associated with dysfunction of the cervical spine and surrounding muscles. It may cause neck pain, muscle tenderness, recurrent headaches, and limitations in daily activities, ultimately affecting quality of life. The study aimed to determine whether Strain Counterstrain (SCS) or Post-Isometric Relaxation (PIR) produces better outcomes in reducing pain intensity, decreasing headache frequency, and improving headache-related quality of life. A randomized clinical trial was conducted in the Physiotherapy Department of Sir Ganga Ram Hospital, Lahore, involving 34 female participants who were randomly allocated into two equal groups of 17 participants each. Group A received Strain Counterstrain, while Group B received Post-Isometric Relaxation. Strain Counterstrain is a passive manual therapy technique in which the therapist positions the affected cervical tissues in a comfortable position to reduce tenderness and abnormal muscle activity. Participants were assessed using three outcome measures: the Numeric Pain Rating Scale (NPRS) to measure pain intensity, a Headache Frequency Diary to record headache episodes, and the Headache Impact Test (HIT-6) to assess the effect of headaches on daily functioning and quality of life. Assessments were conducted at baseline, after six weeks, and at twelve weeks, as reported in the results section. The study aimed to determine whether Strain Counterstrain (SCS) or Post-Isometric Relaxation (PIR) produces better outcomes in reducing pain intensity, decreasing headache frequency, and improving headache-related quality of life.

Cervicogenic headache (CGH) is a secondary headache disorder associated with dysfunction of the cervical spine and its surrounding musculoskeletal structures. It occurs when a problem involving the neck joints, muscles, ligaments, or upper cervical region contributes to pain that radiates from the neck toward the head. The upper cervical vertebrae, particularly C1, C2, and C3, play an important role in the development of cervicogenic headache because sensory pathways from the upper cervical region converge with pathways associated with the trigeminal nerve. This convergence helps explain why pain originating in the neck may be perceived in the head. Patients commonly experience unilateral headache, neck pain, restricted cervical range of motion, and tenderness in the upper cervical muscles. The headache may be aggravated by neck movements, sustained neck positions, or pressure over sensitive cervical structures. Commonly involved muscles include the suboccipital muscles, upper trapezius, and levator scapulae. Unlike primary headache disorders, such as migraine, cervicogenic headache is associated with an underlying cervical musculoskeletal source. Clinical assessment may include evaluation of cervical mobility, muscle tenderness, headache characteristics, and the Flexion-Rotation Test (FRT), which helps identify restricted movement of the upper cervical spine. Accurate diagnosis is important because other conditions, including migraine, cluster headache, cervical radiculopathy, and structural cervical disorders, may produce similar symptoms. Cervicogenic headache can interfere with daily activities, concentration, physical functioning, and overall quality of life. The study is a randomized control trail. Participants are selected from the Physiotherapy Department of Sir Ganga Ram Hospital, Lahore. Thirty-four participants will be recruited from this hospital. Adult females from 18 to 45 years of age suffering from cervicogenic headache (CGH) are included in this study. The participants will experience a headache for a minimum period of 3 months and palpable tenderness of upper cervical muscles. Those who had migraine, previous cervical surgery, cervical fracture, tumor, infection, radiculopathy, or disc herniation are excluded. The intervention is conducted over a period of six weeks among 34 female participants with cervicogenic headache, who were randomly allocated into two equal groups: Group A received Strain Counterstrain (SCS), and Group B received Post-Isometric Relaxation (PIR), with 17 participants in each group. In Group A, the therapist identified tender myofascial points in the upper cervical region, particularly around C1-C3, including the suboccipital muscles, upper trapezius, and levator scapulae. The cervical spine is gently positioned in a comfortable position of ease using appropriate flexion, extension, rotation, or side-bending until tenderness decreased by approximately 70% or more. This position is maintained for approximately 90 seconds while the participant remained relaxed, after which the neck was slowly returned to the neutral position. In Group B, the therapist positioned the cervical spine toward the first restrictive barrier, and participants performed gentle isometric contractions against manual resistance at approximately 10-25% of maximum voluntary effort for 7-10 seconds, followed by 2-3 seconds of relaxation. The therapist then moved the cervical segment gently toward the new restrictive barrier, and the contraction-relaxation cycle was repeated three to five times according to the participant's tolerance and clinical response. Outcomes will be assessed at baseline, at the end of the third week, and at the end of the sixth week using the Numeric Pain Rating Scale (NPRS), Headache Impact Test-6 (HIT-6), and Headache Frequency Diary to evaluate changes in pain intensity, headache-related functional impact, and headache frequency.

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