Cluster Headaches: Causes, Symptoms & Treatment
Cluster headaches are extremely severe, one-sided headache attacks that occur in groups called clusters. They are considered one of the most painful conditions known to medicine.
Things worth knowing about "Cluster headaches"
Cluster headaches are extremely severe, one-sided headache attacks that occur in groups called clusters. They are considered one of the most painful conditions known to medicine.
What are Cluster Headaches?
Cluster headaches are a rare but extraordinarily intense form of headache, widely regarded as one of the most painful conditions a human being can experience. The attacks occur in episodic series known as cluster periods, during which headaches strike daily over weeks or even months. Between cluster periods, many sufferers are completely pain-free. Men are approximately three times more likely to be affected than women.
Causes
The exact cause of cluster headaches is not yet fully understood. Current research points to the involvement of the hypothalamus, the region of the brain responsible for regulating the sleep-wake cycle. Key factors under investigation include:
- Activation of the trigeminal nerve (the fifth cranial nerve) and the autonomic nervous system
- Disruptions in the circadian rhythm (the body's internal clock)
- Genetic predisposition
- Triggers during an active cluster period: alcohol, nicotine, histamine, and strong scents
Symptoms
The pain experienced during a cluster headache attack is typically:
- Unilateral (one-sided), centered around one eye or temple
- Described as boring, drilling, or burning, with extreme intensity
- Lasting between 15 and 180 minutes per attack
- Occurring 1 to 8 times daily, often at night at predictable times
Accompanying autonomic symptoms on the affected side commonly include:
- Watering or reddened eye
- Blocked or runny nose
- Drooping eyelid (ptosis)
- Facial flushing or sweating
- Restlessness and agitation (sufferers typically cannot remain still)
Diagnosis
Diagnosis is primarily clinical, based on the patient's medical history and a detailed description of symptoms. The International Headache Society (IHS) has established clear diagnostic criteria. Additional investigations are used to rule out secondary causes:
- Neurological examination
- MRI (magnetic resonance imaging) of the brain to exclude structural causes
- Keeping a headache diary
Treatment
Acute Treatment
To relieve an acute attack quickly, the following are used:
- Oxygen inhalation: High-flow pure oxygen delivered via a face mask is highly effective and well tolerated
- Triptans (e.g., sumatriptan as nasal spray or subcutaneous injection): Lead to rapid pain relief
- Local anaesthesia of the sphenopalatine ganglion (nasal application)
Preventive Treatment
To reduce the frequency and severity of attacks, the following preventive medications are used:
- Verapamil (calcium channel blocker): The first-line preventive treatment
- Corticosteroids (e.g., prednisolone): Used for rapid interruption of a cluster period
- Lithium, topiramate, or melatonin as additional options
- CGRP antibodies (e.g., galcanezumab): A newer therapy for chronic cluster headaches
Non-Pharmacological Measures
- Avoiding known triggers (especially alcohol during an active cluster period)
- Maintaining a regular sleep-wake schedule
- Psychological support for patients with chronic cluster headaches
References
- Headache Classification Committee of the International Headache Society (IHS): The International Classification of Headache Disorders, 3rd edition. Cephalalgia, 2018.
- May A. et al. - Cluster headache. Nature Reviews Disease Primers, 2023.
- European Headache Federation (EHF): Guidelines on the treatment of cluster headache and other trigeminal autonomic cephalalgias, 2023.
Most purchased products
For your iron balance
Specially formulated for your iron balance with plant-based curry leaf iron, Lactoferrin CLN®, and natural Vitamin C from rose hips.
For your universal protection
As one of the most valuable proteins in the body, lactoferrin is a natural component of the immune system.
For Healthy Oral Flora & Dental Care
Formulated lozenges with Dentalac®, lactic acid bacteria, and Lactoferrin CLN®The latest entries
3 Posts in this encyclopedia categoryWhat helps against headaches
Epidermoid cyst
High blood pressure symptoms
Most read entries
3 Posts in this encyclopedia categoryMagnesiumcarbonat
Calorie content
Cologne list
Related search terms: Cluster headaches