Migraine Prevention: Desnsitising the brain and identifying triggers

modern medical approach to migraines increasingly focus now on prevention

For many people, a migraine is often dismissed as just a bad headache. However, for the approximately 10 per cent of Singaporeans living with this neurological condition, the reality is far more debilitating.

Migraines can cause intense pain, heightened sensitivity to light, sound, and smell, and significant disruption to daily life and work.

The modern medical approach to migraines has shifted considerably. Rather than simply waiting for an attack to occur and treating it after the fact, the focus is now increasingly on prevention. This can be done by desensitising the brain, identifying personal triggers, and taking proactive steps to reduce the frequency and severity of attacks before they happen.

Understanding the migraine brain

A migraine is not merely a symptom. It is a state of neuronal hyperexcitability. In individuals with migraines, the brain’s threshold for reacting to external stimuli is lowered, meaning it is more easily triggered into a pain response.

When a migraine is triggered, the brain releases calcitonin gene-related peptide (CGRP), a protein that causes inflammation and dilation of blood vessels around the brain. This process is responsible for much of the intense pain associated with a migraine attack.

Preventive care aims to keep CGRP levels stable and reduce the brain’s sensitivity over time. By adopting a prevention-first approach, patients may be able to move from chronic migraine, defined as 15 or more migraine days per month, towards less frequent episodic migraine, and in some cases achieve long-term remission.

Symptoms of migraine

Migraine symptoms can vary between individuals. The headache typically begins on one side of the head and may gradually spread to both sides, or in some cases affect both sides simultaneously. Other symptoms commonly associated with migraines include nausea, vomiting, and sensitivity to light, sound, smell, or touch. Even simple physical activity such as walking may worsen the pain during an attack.

Some individuals experience an aura before or during a migraine attack. An aura is a sensory disturbance that develops and disappears gradually, usually lasting up to an hour. Aura symptoms may include:

  • Seeing various shapes, flickering lights, or flashing spots
  • Changes in or loss of vision
  • A tingling sensation in the limbs
  • Difficulty with speech

Not all individuals with migraines experience aura, and its presence or absence does not determine the severity of the condition.

Identifying triggers

Prevention begins with awareness. Identifying personal triggers is one of the most effective steps individuals with migraines can take. In Singapore’s tropical, urban environment, certain local factors are particularly common triggers.

Sudden changes in sleep patterns or caffeine withdrawal, often experienced at weekends when routines shift, can trigger what is sometimes called a let-down migraine. Frequently moving between Singapore’s humid outdoor environment and heavily air-conditioned indoor spaces may also trigger migraines in some individuals.

Dietary triggers are another consideration. Nitrates found in processed meats and monosodium glutamate (MSG) in certain foods can act as neurological stimulants in susceptible individuals. Digital fatigue from prolonged exposure to screens is increasingly recognised as a trigger, particularly in Singapore’s technology-driven workforce.

Keeping a headache diary to record the timing, duration, severity, and possible triggers of each migraine episode can help both the patient and their doctor identify patterns and develop a personalised prevention plan.

Managing and preventing migraines

Several approaches may help reduce the frequency and severity of migraines.

Identifying and avoiding known triggers, while not always possible, may meaningfully reduce how often migraines occur. Over-the-counter painkillers may help reduce the intensity and duration of attacks when taken early, though these should be used as directed and not overused, as medication overuse can itself trigger a secondary type of headache known as medication overuse headache.

Resting in a quiet, darkened room at the onset of an attack may help reduce its severity, particularly when combined with appropriate medication. Regular aerobic exercise has been shown to reduce stress and tension, which in turn may lower the frequency of migraines. Maintaining consistent routines, including eating at regular times and keeping to regular sleeping hours, may also help stabilise the conditions that contribute to migraine onset.

Non-medication ways to reduce migraine attacks:

Maintain a consistent sleep schedule
Aim to sleep and wake at similar times every day, including weekends.
Keep a headache diary
Record symptoms, timing, sleep patterns, meals, and possible triggers. This helps to disucss with your doctor towards a personalised prevention plan.
Stay physically active
Regular aerobic exercise may help reduce stress and tension associated with migraines.
Know your personal triggers
Watch for sleep disruption, caffeine withdrawal, dietary triggers, prolonged screen exposure and frequent move between humid outdoor and air-conditioned indoor spaces.

Advanced preventive therapies

For individuals whose migraines disrupt daily life more than twice a month, or those who find standard treatments ineffective, specialists at Raffles Neuroscience Centre offer several advanced preventive options.

CGRP monoclonal antibodies are the first medications specifically designed to prevent migraines. Administered as a monthly self-injection, they work by blocking the CGRP receptor, effectively reducing the brain’s susceptibility to pain signals.

Botulinum toxin therapy, commonly known as Botox, involves precise injections around the head and neck that can provide relief from chronic migraine for up to 12 weeks by targeting the nerve endings involved in pain signalling.

Neuromodulation devices, such as wearable technology that uses mild electrical stimulation, can help train the trigeminal nerve and raise the brain’s threshold against future attacks.

Preventive nutraceuticals such as high-dose magnesium, riboflavin (vitamin B2), and coenzyme Q10 are also commonly recommended as a natural first-line preventive approach.

Why early intervention matters

Ignoring frequent migraines can lead to central sensitisation, a condition in which the nervous system becomes persistently heightened in its pain response, making migraines increasingly difficult to treat over time. Early consultation with a healthcare professional allows for thorough trigger analysis and the development of a structured, personalised migraine action plan. This proactive approach reduces reliance on rescue painkillers and supports better long-term outcomes.

Your path to relief

Raffles Medical Group provides an integrated pathway for migraine management. You can begin your journey at any Raffles Medical clinic island-wide, where your doctor can help you track triggers, manage lifestyle adjustments, and provide first-line preventive medications. If your migraines remain frequent or severe, your doctor can refer you directly to a neurologist at Raffles Neuroscience Centre for access to advanced diagnostics and the latest biologic and neuromodulation therapies.

To take the first step towards better migraine management, speak with a doctor at Raffles Medical or schedule a specialist consultation at Raffles Neuroscience Centre.

Sources:

  1. The Straits Times (2025) – Help for intense throbbing head pain: What’s new in migraine treatment?: https://www.straitstimes.com/singapore/health/help-for-intense-throbbing-head-pain-what-s-new-in-migraine-treatment-pfizer