chronic migraine is defined as headache occurring on
Chronic migraine is a serious neurological condition that can severely disrupt both work and daily life. For patients who have not achieved adequate control with oral preventive medications, Botulinum Toxin injection is an internationally recognised, clinically validated treatment that provides long-term migraine prevention — reducing both the frequency and severity of attacks.
What Is Chronic Migraine?
Clinically, chronic migraine is defined as headache occurring on ว่าเป็นภาวะที่ผู้ป่วยมีอาการปวดศีรษะอย่างน้อย 15 or more days per month for more than 3 consecutive months, with at least 8 of those days meeting the diagnostic criteria for migraine — including symptoms such as throbbing or pulsating pain, typically on one side of the head, accompanied by nausea, and sensitivity to light or sound.
This pattern of headache often fails to respond adequately to standard oral analgesics and conventional preventive medications, making it one of the more challenging headache conditions to manage.
How Does Botulinum Toxin Prevent Migraine?
Botulinum Toxin injection is FDA-approved for the prevention of chronic migraine and works through two complementary mechanisms :
- Blocking pain signal transmission — the toxin inhibits the release of neurotransmitters involved in pain signalling, reducing the chemical activity that drives migraine onset.
- Reducing nervous system sensitisation — when injected at specific points across the scalp, back of the head, and neck, it decreases the hypersensitivity of the peripheral nerves in these areas. Over time, this reduces both the frequency of migraine attacks and the severity of those that do occur.
Unlike pain relief medication, which treats attacks after they begin, Botulinum Toxin works preventively — modifying the underlying neural activity that makes chronic migraine possible.
Who Is This Treatment Suitable For?
- Patients with headache occurring on more than 15 days per month
- Patients who have tried oral preventive medications and found them ineffective, or poorly tolerated due to side effects
- Patients who want to reduce their overall use of daily pain medication and achieve more sustainable, long-term control
Treatment Protocol
- Session duration : Each treatment session takes approximately 15–20 minutes and does not require any recovery time. Patients can return to their normal activities the same day.
- Injection schedule : Treatments are recommended every 3 months, continued for approximately 18 months in total, to achieve sustained and durable migraine control. Consistent repeat treatment produces progressively better outcomes as the cumulative effect builds over time.
- What to expect during the procedure : Injections are placed at multiple standardised points across the forehead, temples, back of the scalp, and neck. Injections at the back of the head and neck are generally well tolerated and less uncomfortable than facial injections, as nerve density in these areas is lower.
Expected Outcomes
Clinical studies show that Botulinum Toxin treatment can reduce the number of monthly migraine days by an average of 50%, with a significant reduction in the intensity of attacks that do occur. Most patients report a meaningful improvement in their ability to function at work, maintain daily routines, and engage in social activities without the constant disruption of migraine.
The full preventive benefit typically develops after the second or third treatment cycle, which is why consistent adherence to the recommended injection schedule is important.
Self-care After the Procedure
- At the injection sites : Small raised bumps may appear at injection points immediately after treatment. These are normal and typically subside on their own within a few hours.
- For the first 72 hours : หลีกเลี่ยงการออกกำลังกายหนัก การนวดกดจุด หรือการขยี้บริเวณที่ฉีดเป็นเวลา 72 ชั่วโมง Avoid strenuous exercise, deep tissue massage, and rubbing or pressing on the treated areas. These activities can cause the toxin to migrate away from its intended sites, reducing effectiveness.
- Ongoing lifestyle habits : To maximise the benefit of treatment, maintain a consistent sleep schedule, stay well hydrated throughout the day, and avoid known personal migraine triggers — particularly stress, bright or flickering light, and irregular meal timing.
Pain Management at Bangkok Interventional Clinic
At Bangkok Interventional Clinic, we focus on personalised, in-depth pain management tailored to each individual.
- All patients are evaluated and treated by a board-certified pain specialist, ensuring accuracy, safety, and effective care.
- Targeted interventional procedures for fast and effective symptom relief
- Patient education to support sustainable, long-term self-care
Our goal is to meaningfully improve the quality of life of every patient we treat. If you are living with pain that affects your daily life, the right diagnosis and the right treatment plan are where change begins.
