Treatment for chronic migraine
Updated: Mar 31
BOTOX® is licensed for the treatment of chronic migraine, defined as 3 months of at least 15 days of headache a month, of which at least 8 days have migrainous features, such as nausea, light or noise sensitivity, pulsating or lateralised pain & lasting 4 hours or more.
How does it work in migraine?
It is thought that botulinum toxin gets into the small nerves that carry pain from the head to the brain, known as C-fibres. This reduces the amount of chemicals released from the nerve ending and therefore interrupts the feedback pathway that perpetuates migraine and headache.
How is it given?
BOTOX ® is given as a series of 31 to 39 tiny injections under the skin or into the muscles in and around the head of the forehead, above the ears, and into the neck and shoulders. The injections are repeated every 12 weeks until the patient no longer has chronic migraine, or until it is clear that treatment is not working. Normally a response is seen after the first or second set of injections; only about one in ten people respond to a third set of injections if the first two sets fail.
How effective is it?
The goal is not to become completely free of headache or migraine; but to improve quality of life, and to convert migraine from chronic to episodic.
About one in four patients do not respond; one in four respond well to the first or second set of injections, and half need more than two sets of injections to get a good response. Studies show that 47% of patients had a 50% or greater reduction in the number of days with headache.
The biological effect of botulinum toxin on nerves takes several days or a few weeks to work. You should not expect chronic migraine to improve properly in less than 4 weeks. Some patients do not start to improve until after their second set of injections which is given 12 weeks after the first set of injections.
Who can’t have BOTOX for migraine?
BOTOX is only for chronic migraine: not any other sort of migraine.
People who are pregnant or breastfeeding may not have BOTOX.
If you have other neurological disease, for example Bell’s palsy, a neuropathy, or Myasthenia Gravis, the risks of BOTOX are increased.
If you have recently (within the last 3 months) had cosmetic botulinum toxin then the side effects could be increased.
Tell your Practitioner if you:
Have had problems with injections (eg. fainting) in the past
Have had problems with previous botulinum toxin injections
Have inflammation, weakness or wasting of the muscles/skin where your doctor plans to inject
Have had problems with swallowing or food or liquid accidentally going into your lungs, especially if you will be treated for persistent muscle spasms in the neck and shoulders
Suffer from any other muscle problems or chronic diseases affecting your muscles
Suffer from certain diseases affecting your nervous system
Have an eye disease called closed-angle glaucoma or were told you were at risk of developing this type of glaucoma
Have had any surgery that may have changed the muscle that is being injected
Will have an operation soon
Are taking any blood thinning medicine
What side effects might I get?
The injections are slightly prickly or stingy and take about 5 minutes to complete.
It is possible, though rare, to have an acute allergic response so you should stay in the clinic for several minutes after the first set of injections.
Less than one in ten patients experience each of the following side effects:-
Worsening migraine. This can begin within a day or two of the injections, usually lasts a small number of days. It can be treated with your usual pain killers.
As with all injections; pain, bruising, bleeding or infection where the injection was given are a possibility
Drooping of eyebrows or eye lids. This begins after a couple or a few weeks and can last for a small number of weeks.
Muscle weakness, pain, cramp, stiffness or tightness
Weakness and pain in the neck. This begins after a couple or a few weeks and can last for a small number of weeks. It can be treated with regular anti inflammatory tablets.
Less than 1 in 100 may experience:
Difficulty in swallowing
How to get Botox treatment for chronic migraine
You do not need a GP referral, but can self refer to see an aesthetic Practitioner who has advanced training to treat migraines. If you book in for a consultation your Practitioner will discuss your medical history to assess if this is an appropriate treatment for you.
Cost of treatment £500