The Medicines and Healthcare Products Regulatory Agency has approved the use of botox for the treatment of chronic migraine.
The approval follows a study involving 1,300 people, which showed that botox reduced the frequency of headaches. The regulator said that the approval was only for people who suffered headaches 15 days a month.
"We have been following these studies really closely and the evidence is really pretty solid," said Lee Tomkins, director of Migraine Action. "These people spend half their lives in pain. Even if they get half the attacks, it can really improve their quality of life."
Estimates indicate that 700,000 people in the UK get chronic migraines. Botx injections are usually used to smooth wrinkles, but they have also shown efficacy in reducing frequency of headaches in migraines.