cycling
Treatment for Cluster Headache
Cycling (oxygen therapy) for cluster headache involves inhalation of high-flow 100% oxygen at 12-15 liters per minute through a non-rebreather mask, which induces cerebral vasoconstriction and reduces intracranial blood flow. This rapid intervention acts by stimulating the trigeminal-autonomic reflex and modulating neurovascular inflammation, typically providing significant pain relief within 15 minutes for many patients with acute cluster headache attacks.