Cluster headache, also referred to as episodic cluster headache or histamine headache, is a rare and severe primary headache disorder categorized as a trigeminal autonomic cephalalgia. It presents as a special migraine variant dominated by intense unilateral orbital and cranial pain, characterized by abrupt onset, extreme severity, and clustered symptomatic episodes.
The exact etiology of cluster headache remains unclear. Current mainstream medical research attributes its occurrence to abnormal dilation of intracranial and extracranial blood vessels. During acute attacks, patients exhibit significantly elevated blood histamine levels and increased urinary histamine excretion. This pathological reaction is recognized as an immune-mediated allergic response, in which massive histamine is rapidly released from body tissues, triggering acute vasodilation and severe concentrated head pain.
Clinical Diagnostic Criteria
Cluster headache predominantly affects male patients aged 20 to 50 years, with a strong correlation with long-term smoking and alcohol consumption. Unlike migraine, cluster headache occurs without premonitory aura symptoms. Pain is strictly unilateral in most cases and frequently awakens patients from sleep during nighttime hours due to extreme intensity.
Pain typically originates at the ipsilateral supraorbital region, rapidly spreading to the unilateral forehead, parietal area, temporal region, and nasal region, occasionally radiating to the ipsilateral shoulder. Symptom intensity peaks within a short period, presenting as sharp lacerating pain, burning pain, or throbbing cranial pain. Pain severity is noticeably relieved when standing upright.
Common accompanying autonomic symptoms include conjunctival congestion, elevated intraocular pressure, excessive lacrimation, nasal congestion, facial flushing, hyperhidrosis, distended temporal arteries, and increased local skin temperature on the affected side of the face.
Each cluster headache episode lasts 10 to 180 minutes, featuring rapid onset and quick resolution. Patients may experience one or multiple attacks within a single day. The remission phase after recovery is relatively long, ranging from several months to several years. Many patients achieve permanent recovery after quitting smoking and alcohol. In rare cases, the condition progresses to chronic cluster headache with recurrent attacks lasting for years or longer.
Physical examination reveals obvious tenderness at the supraorbital region; local compression of tender points can rapidly alleviate acute pain symptoms.
Standard Acupuncture Treatment for Cluster Headache
Acupuncture for cluster headache is a safe, effective, non-invasive TCM therapy for severe episodic cranial pain. Standardized WHO acupoint stimulation regulates vascular dilation, inhibits histamine-mediated inflammatory reactions, relieves nerve autonomic dysfunction, and rapidly terminates acute cluster headache episodes.
Standard Acupoints & Professional Needling Protocol (WHO Standard Coding)
1. Yangbai (GB14, Affected Side)
Location: Located on the forehead, approximately 25 mm directly above the midpoint of the eyebrow.
Needling Method: Use a 32-gauge, 1.5-inch filiform needle. After standard aseptic disinfection, insert obliquely to a depth of 30 mm toward Yuyao (EX-HN4) acupoint at the eyebrow midpoint.
Needling Sensation: Local forehead distension and soreness.
2. Toulinqi (GB15, Affected Side)
Location: Approximately 12 mm directly above Yangbai (GB14), within the anterior hairline.
Needling Method: Use a 30-gauge, 2-inch filiform needle. After local disinfection, perform horizontal subcutaneous insertion to a depth of 45 mm toward Muchuang (GB16).
Needling Sensation: Local cranial distension and soreness.
3. Taiyang (EX-HN5, Affected Side)
Location: A hollow depression roughly 25 mm posterior to the junction of the lateral eyebrow tip and outer canthus.
Needling Method: Use a 30-gauge, 2-inch filiform needle. After routine disinfection, insert obliquely 45 mm toward Touwei (ST8).
Needling Sensation: Local temporal distension and soreness.
4. Yifeng (SJ17, Affected Side)
Location: A natural depression between the earlobe and mandibular angle.
Needling Method: Use a 30-gauge, 2-inch filiform needle. After aseptic disinfection, insert obliquely 45 mm toward the posteromedial mandibular region.
Needling Sensation: Local cervicofacial distension and soreness.
Clinical Treatment Procedure
Patients are treated in a seated position. All acupoints are needled following standardized aseptic techniques. Needles are retained for 40 minutes per session, with one round of manual manipulation applied midway during retention to enhance therapeutic stimulation.
Treatment is administered once daily. A complete therapeutic course consists of 6 sessions. Acupuncture intervention can be restarted immediately upon symptom recurrence.
Adjunctive Supraorbital Nerve Block Therapy
For patients with poor acupuncture response, supraorbital local nerve block therapy provides rapid symptomatic relief.
Preparation: Use a 2ml sterile syringe with a sterile needle, aspirate 1ml of 2% procaine for standby use.
Procedure: Place the patient in a seated reclining position with eyes closed. After standard local disinfection targeting the supraorbital tender point, insert the needle 8mm deep along the orbital margin. Confirm no intravascular placement by negative blood aspiration, then slowly inject 0.6ml of procaine solution.
After needle withdrawal, apply compression hemostasis with an alcohol cotton ball for approximately 1 minute. About 5 minutes after the block injection, patients experience obvious warmth and formication sensation across the ipsilateral orbit, forehead, and vertex, accompanied by mild temporary ptosis (spontaneously resolving within 2 hours), followed by gradual pain relief.
The block treatment is performed once every two days. Discontinue treatment immediately if no improvement is observed after 3 consecutive sessions.
Clinical Discussion & Prognostic Advice
TCM acupuncture achieves excellent therapeutic effects for cluster headache. Most patients obtain significant pain relief or complete symptomatic resolution within approximately 3 treatment sessions. For a small number of patients insensitive to acupuncture stimulation, supraorbital nerve block therapy can eliminate symptoms effectively within 3 sessions.
After clinical recovery, patients are advised to quit smoking, alcohol, and spicy irritant foods to reduce recurrence risk. Acupuncture and block therapies remain highly effective for managing future recurrent cluster headache episodes.