Botox, was approved in 2010 for adults who get chronic migraines. That means you have both: A history of migraine headaches. Headaches (including tension-type) on most days (15 or more) of the month of which 8 are migraine.
It is not an approved treatment if you: Get headaches 14 or fewer days each month Have other types of headaches, like cluster. Botox works for migraine headaches because it blocks chemicals called neurotransmitters that carry pain signals from your brain.
Botox is like a roadblock in that pathway. It stops the chemicals before they get to the nerve endings around your head and neck.