Migraines Treatment

from £800

What is chronic migraine?

Chronic migraine is defined as having a headache on 15 or more days per month, with at least 8 of those days carrying migraine features, for longer than three months. It sits at the more disabling end of the migraine spectrum, and for many people it becomes the thing that quietly organises their life around it. This treatment is intended specifically for chronic migraine rather than occasional or episodic headaches, which is one of the reasons a proper assessment matters before any injection is given.

Could this treatment help you?

This treatment tends to suit people who recognise several of the following. You have frequent headache days rather than the occasional one. You have already tried preventive tablets and either found them ineffective or difficult to tolerate. You are relying on acute painkillers or triptans often enough to worry about it. And the migraines are genuinely interfering with your work, your sleep, or your day-to-day life.

If that describes where you are, a consultation is the sensible first step. It gives Dr Karwal the chance to confirm that what you are experiencing is chronic migraine, to rule out other causes of frequent headache, and to be honest with you about whether this treatment is likely to help.

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The PREEMPT protocol

The injection technique used for chronic migraine is based on the PREEMPT programme, short for Phase III Research Evaluating Migraine Prophylaxis Therapy. These were the large clinical trials that established which muscles to inject, how much to use, and how to administer it, and they form the evidence base on which this treatment was approved.

The standard paradigm delivers a total of 155 units of botulinum toxin type A across 31 fixed injection sites, spread over seven muscle areas of the head and neck. Injections are given symmetrically on both sides, with the single exception of the procerus at the midline, and each site receives a small, precise, shallow intramuscular dose.

Where a patient's pain is concentrated in particular areas, up to 40 additional units may be added using a "follow the pain" approach, allowing the treatment to be tailored to the individual rather than applied identically to everyone. This flexibility is part of the original protocol, not an add-on.

The seven injection areas

  • Frontalis (forehead): 20 units across 4 sites

  • Corrugator (between the eyebrows): 10 units across 2 sites

  • Procerus (bridge of the nose): 5 units at 1 midline site

  • Occipitalis (back of the head): 30 units across 6 sites

  • Temporalis (temples): 40 units across 8 sites

  • Cervical paraspinal (upper neck): 20 units across 4 sites

  • Trapezius (upper shoulders): 30 units across 6 sites

Following a standardised paradigm like this is not about rigidity. It is about delivering the treatment in the same way it was delivered in the trials that proved it worked, so that your treatment is grounded in real evidence rather than guesswork.

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