Doctors don’t know what causes cluster headaches, a neurological problem that creates “clusters” of acute headaches. The headaches may occur regularly over a period of weeks or months. They may stop for months or years and then return.

Cluster headaches cannot be cured, but treatment may relieve your symptoms and reduce the frequency of attacks. Breathing oxygen through a mask provides quick relief for many people. Medications, including corticosteroids, synthetic hormones, and pain relievers, may be helpful. They may be given through IVs, nasal sprays, inhalers, or injections. If you do not respond to these methods, nerve blocks may provide relief.

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