Cervicogenic Headache (CGH): Pathology, Muscles Involved, and Physiotherapy Treatment

Definition and Background

Pathology and Mechanism

Anatomical Basis

• Pain originating in the upper cervical structures is referred to the head and face
• Head pain can spread from occipital regions to trigeminal territories (frontal, temporal, orbital regions)

Pain-Generating Structures (Sources of CGH)

1. Zygapophyseal (facet) joints - especially C2/C3 (most common), also atlanto-occipital and atlanto-axial joints
2. Intervertebral discs (C2-C3, C3-C4)
3. Upper cervical muscles and ligaments - suboccipital muscles, semispinalis capitis, splenius capitis, upper trapezius, SCM
4. Apophyseal (facet) arthropathy - degeneration of upper cervical facets
5. Greater and lesser occipital nerves - entrapment or irritation
6. C2 dorsal root entrapment
7. Atlantoaxial region pathology (e.g., rheumatoid arthritis)
8. Ligamentum flavum calcification, hypertrophy of posterior longitudinal ligament

Central Sensitization

• Lower thresholds for activation
• Increased spontaneous activity
• Expanded receptive fields

Muscles Responsible

Primary Muscles

Why Muscle Dysfunction Matters

• Increases compressive load on posterior cervical structures (facets, discs)
• Forces the superficial global muscles (SCM, upper trapezius) into compensatory overactivation
• Perpetuates joint irritation and trigger point formation

Clinical Features

• Pain typically unilateral, starting in the neck/occiput and radiating to the forehead, temple, or orbital region
• Triggered or aggravated by neck movement or sustained neck postures
• Constant pain with episodic exacerbations (unlike episodic migraine)
• Tenderness over the greater/lesser occipital nerves, cervical facet joints, and upper/middle cervical muscles
• Does not respond to migraine-specific medications (triptans)
• History of head or neck trauma is common

Physiotherapy Treatment (Detailed)

1. Manual Therapy

• Applied to upper cervical segments (C1-C2, C2-C3) and/or thoracic spine
• Reduces joint restriction, neurophysiological pain modulation via descending inhibitory pathways
• Evidence: Nuñez-Cabaleiro & Leirós-Rodríguez (2022, Headache) systematic review confirmed effectiveness in reducing headache frequency and intensity

• Grades I-IV cervical mobilization, especially at C2-C3 and C0-C1 levels
• Mulligan concept: Sustained Natural Apophyseal Glides (SNAGs) at upper cervical segments - patient performs active movement while therapist applies a gliding force; particularly effective when neck movement reproduces the headache
• Less risk than HVLA; appropriate for patients with contraindications to manipulation
• Systematic review (Bini et al., 2022, Chiropr Man Therap) showed combined manual therapy + exercise significantly reduces headache intensity and frequency

• Trigger point therapy targeting suboccipital muscles, upper trapezius, SCM, semispinalis capitis
• Suboccipital inhibition/release: sustained gentle pressure at the suboccipital triangle to release the rectus capitis and oblique capitis muscles - directly reduces compressive load on upper cervical structures
• A 2024 meta-analysis (Lu et al., Pain Res Manag, PMID 38585645) confirmed myofascial release significantly improves CGH

• Patient contracts the restricted muscle isometrically against the therapist's counterforce, followed by passive stretch
• Targets: suboccipital muscles, SCM, upper trapezius, levator scapulae
• Restores full segmental ROM and reduces muscle hypertonicity

2. Exercise Therapy

• Targets longus colli and longus capitis using a pressure biofeedback unit (Stabilizer) or ultrasound feedback
• Patient performs nodding motion (craniocervical flexion) at 5 progressive pressure levels (20-30 mmHg)
• Considered the single most evidence-based exercise for CGH
• Improves neuromuscular control, reduces compressive load on upper cervical joints
• Jull et al.'s landmark RCT demonstrated that DNF training combined with manual therapy is superior to either intervention alone

• Progressive resistance exercises for deep and superficial cervical extensors
• Targets: semispinalis cervicis, multifidus (cervical), longissimus capitis
• Addresses the motor control impairment seen in CGH - reduced activation of cervical multifidus and altered muscle recruitment patterns

• Serratus anterior and lower trapezius strengthening to normalize scapular position
• Thoracic extension exercises to counteract forward head posture
• A 2024 RCT (referenced in Nature Index) combining cervical mobilization with clinical Pilates showed greater improvements in headache intensity and muscle stiffness (suboccipital and trapezius) than mobilization alone

• Suboccipital stretch, cervical lateral flexion and rotation stretches
• Particular emphasis on stretching upper trapezius and SCM
• Neural mobilization/upper cervical neurodynamic techniques for greater occipital nerve entrapment

• Low-impact aerobic conditioning (walking, swimming, cycling) reduces central sensitization through endogenous opioid release and improved cardiovascular function

3. Dry Needling

• Insertion of fine needles into active myofascial trigger points in suboccipital muscles, upper trapezius, SCM, semispinalis capitis
• Reduces local trigger point irritability, improves muscle extensibility
• The APTA 2024 network meta-analysis identified spinal manipulation combined with dry needling as one of the most effective intervention combinations for reducing CGH intensity and frequency

4. Postural Correction and Ergonomics

• Assessment and correction of forward head posture (FHP) - the most common biomechanical perpetuating factor
• For every 1 inch of forward head translation, the effective weight on the cervical spine increases by approximately 10 lbs
• Ergonomic modifications: workstation setup, screen height, chair support
• Sleep posture: appropriate pillow height to maintain neutral cervical alignment

5. Electrophysical Agents (Adjunctive)

• TENS (Transcutaneous Electrical Nerve Stimulation): Pain modulation via gate control; applied to upper cervical paraspinals or over the greater occipital nerve
• Therapeutic ultrasound: Deep tissue heating to suboccipital and upper cervical muscles
• Low-level laser therapy (LLLT): Reduces inflammation and trigger point activity in superficial cervical muscles
• Heat therapy: Reduces muscle spasm and improves tissue extensibility before manual therapy

6. Taping Techniques

• Kinesio taping of upper trapezius and cervical paraspinals for muscle facilitation/inhibition
• Postural taping to facilitate thoracic extension and correct FHP

7. Education and Self-Management

• Pain neuroscience education (PNE): explaining central sensitization mechanisms reduces fear-avoidance and improves outcomes
• Home exercise program: DNF exercises, cervical stretching, posture correction
• Activity modification and pacing strategies
• Relaxation techniques: diaphragmatic breathing, progressive muscle relaxation

Evidence Summary

Physiotherapy Clinical Pathway

1. Assessment: C0-C3 segmental mobility testing, DNF endurance test, postural assessment, trigger point palpation, provocative testing (manual pressure reproducing headache), diagnostic nerve blocks if needed
2. Acute phase (weeks 1-3): Manual therapy (mobilization/manipulation), soft tissue release, pain education, TENS/heat
3. Rehabilitation phase (weeks 3-8): DNF training, cervical stabilization exercises, postural correction, ergonomic advice, Mulligan SNAGs
4. Maintenance phase (8+ weeks): Progressive loading, aerobic conditioning, self-management, return to activity

Key References

• Bradley and Daroff's Neurology in Clinical Practice - Section on Cervicogenic Headache, p. 1101
• Scott-Brown's Otorhinolaryngology Head & Neck Surgery - Cervical Spine Degenerative Disease and Cervicogenic Headache, p. 1309
• Adams and Victor's Principles of Neurology - Headache Related to Diseases of the Cervical Spine, p. 208
• Nuñez-Cabaleiro P & Leirós-Rodríguez R. Effectiveness of manual therapy in CGH: Systematic review. Headache. 2022 [PMID: 35294051]
• Bini P et al. Effectiveness of manual and exercise therapy on CGH: systematic review and meta-analysis. Chiropr Man Therap. 2022 [PMID: 36419164]
• Lu Z et al. Myofascial Release for CGH: Systematic Review and Meta-Analysis. Pain Res Manag. 2024 [PMID: 38585645]
• Reynolds B et al. Manual physical therapy for neck disorders: umbrella review. J Man Manip Ther. 2025 [PMID: 39607420]