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Botox can be used as a chronic migraine treatment. Botox is a brand of botulinum toxin – a neurotoxin which interferes with the transmission of nerve signals throughout your body.
Botulinum toxin is thought to help treat migraines by blocking the chemicals that carry pain signals from within your brain when injected around the nerve endings where pain transmission takes place. This can cut down the symptoms completely or partially reduce the number of migraine attacks.
Botox is approved for use on the NHS for treating frequent migraines. These are defined as more than 15 headaches a month, with at least eight showing symptoms of a chronic migraine. Botox has not been found to be effective for tension or cluster headaches.