For some people, a migraine attack does not only cause head pain. It can also make ordinary sensations feel painful. Brushing your hair, wearing glasses, putting on jewellery, resting your head on a pillow, or feeling water touch your skin in the shower may suddenly feel uncomfortable or even unbearable.
This symptom is called allodynia. It means that something which would not normally cause pain starts to feel painful. In migraine, allodynia can be a sign that the nervous system has become highly sensitive during an attack.
Although allodynia can feel alarming, it is a recognised migraine symptom. It may be a sign that the migraine attack has become more established, which is why following an agreed treatment plan early can be important for some people.
For plain-English definitions of allodynia, central sensitisation and other migraine-related terms, explore our Migraine A-Z Glossary.
Key Takeaways
- Allodynia is pain caused by normally non-painful touch. Everyday sensations like brushing hair, wearing glasses, or shower water touching the skin may become painful.
- It is linked to central sensitisation. This means the brain and nervous system can become more reactive to pain signals during a migraine attack.
- It can suggest the migraine has progressed. Allodynia may appear when an attack has moved into a more established or severe stage.
- Early migraine treatment can matter. Following a treatment plan early in an attack may be more helpful for some people than waiting until symptoms are severe.
- Allodynia is common in migraine. Its frequency and severity can vary from person to person and from one attack to another.
What Is Allodynia?
Allodynia is a symptom where the body interprets harmless touch or pressure as pain. In simple terms, the skin, scalp, or face may become unusually sensitive during a migraine attack.
For example, someone with allodynia may find that their scalp hurts when brushing their hair. Another person may feel pain from wearing glasses, earrings, a necklace, a hat, or even soft clothing. Some people notice it most when shower water touches their face or head.
These sensations are not imagined. They can happen because the migraine process may make the central nervous system more sensitive. When this happens, normal sensory signals may be processed as painful.
Common Examples of Allodynia During Migraine
Allodynia can show up in different ways depending on the person and the migraine attack. Some of the most common examples include:
- Scalp sensitivity: Pain when brushing, washing, or tying up the hair.
- Facial sensitivity: Discomfort from wearing glasses, sunglasses, makeup, or touching the face.
- Jewellery discomfort: Earrings, necklaces, or hair accessories may suddenly feel painful or irritating.
- Clothing sensitivity: Hats, collars, scarves, or tight clothing may feel uncomfortable against the skin.
- Water sensitivity: Shower water touching the scalp, face, or neck may feel sharp, painful, or overwhelming.
- Pressure sensitivity: Lying on a pillow, resting the head, or leaning against a surface may increase discomfort.
Why Does Allodynia Happen in Migraine?
Allodynia is closely linked to a process called central sensitisation. This means the brain and spinal cord become more responsive to sensory information. During a migraine attack, pain pathways can become increasingly activated. As the attack progresses, the nervous system may start reacting strongly to sensations that would normally be harmless.
This is one reason why allodynia is often viewed as a sign that a migraine attack has become more established. In the earlier stages of a migraine, treatment may work more effectively for some people because the nervous system may not yet be as sensitised. Once allodynia develops, the attack may be harder to manage for some people.
Migraine can involve a range of temporary neurological symptoms in addition to pain sensitivity. For an overview of visual, sensory and speech-related symptoms, read our guide to migraine aura.
⚠️ IMPORTANT HEALTH NOTE:
If you experience new, severe, unusual, or rapidly worsening head pain, or if your migraine symptoms suddenly change, speak with a GP, pharmacist, or qualified healthcare professional. Seek urgent medical attention for sudden “thunderclap” headache, weakness, confusion, vision loss, fainting, or symptoms that feel very different from your usual migraine pattern.
Why Early Migraine Treatment Matters
One of the most important lessons from allodynia is timing. Many people wait to see if a migraine will pass on its own before taking action. However, once allodynia develops, the nervous system may already be in a more sensitised state.
This is why many migraine specialists encourage people to follow their agreed acute-treatment plan as early as possible in an attack. Early action may help some people manage symptoms before sensitivity spreads and before everyday touch becomes painful.
Early action may include taking prescribed acute medication as directed, reducing exposure to triggers, resting in a dark or quiet environment, staying hydrated, and avoiding additional sensory stress where possible.
What Allodynia Can Tell You About Your Migraine Pattern
Allodynia can be a useful symptom to track because it may show how far a migraine attack has progressed. If you often notice scalp pain, facial sensitivity, or discomfort from glasses or jewellery during attacks, this may suggest your nervous system is becoming sensitised during migraine episodes.
Keeping a migraine diary can help you identify when allodynia appears. For example, you may notice that it starts two hours into an attack, after nausea begins, or when light and sound sensitivity become more intense. This information can help you and your healthcare professional understand your migraine pattern more clearly.
For a broader approach to tracking possible patterns and reducing avoidable sensory strain, read our guide to best practices for preventing migraine triggers.
Tips for Managing Allodynia During a Migraine
When allodynia appears, the goal is to reduce sensory irritation and support the nervous system while the migraine settles. The following steps may help make an attack more manageable:
- Remove pressure where possible: Take off glasses, hair ties, hats, jewellery, or tight clothing if they are causing discomfort.
- Be gentle with your scalp and skin: Avoid brushing, washing, or styling your hair during the most sensitive phase of the attack.
- Reduce sensory load: Rest in a quiet, dim space and minimise strong smells, bright light, and loud sound.
- Use your migraine treatment early: Follow the treatment plan recommended by your GP, pharmacist, or migraine specialist.
- Track when it happens: Note whether allodynia appears early, midway, or late in your migraine attack.
For more practical, non-drug comfort measures to discuss alongside your individual migraine plan, read our guide to home remedies for immediate migraine relief.
The Role of Nutritional Support
Allodynia reflects a sensitive nervous system, and many people with migraine look for ways to support their overall wellbeing between attacks. While supplements do not replace medical treatment, some nutrients are often discussed in relation to migraine prevention and normal cellular energy support.
Riboflavin (Vitamin B2): Riboflavin is often discussed in migraine-prevention conversations because of its role in normal cellular energy production. To review current ingredients, serving information and directions, see the MigraSoothe Original Vitamin B2 Riboflavin 400 mg product page.
Alpha Lipoic Acid (ALA): ALA is an antioxidant involved in metabolic and mitochondrial function. Anyone considering a new supplement should discuss suitability with a GP or pharmacist, particularly when taking regular medication or managing another health condition.
MigraSoothe Pro Product Information
For readers comparing MigraSoothe’s multi-ingredient formula, visit the MigraSoothe Pro product page for current ingredients, directions and product information. This link is for information only and does not replace individual medical advice.
When Should You Speak to a Healthcare Professional?
If allodynia is new for you, becoming more frequent, or making your migraine attacks harder to manage, it is worth speaking with a healthcare professional. You may need a review of your migraine treatment plan, especially if you are regularly waiting until symptoms are severe before treating an attack.
You should also seek medical advice if your migraine pattern changes, if attacks become more frequent, or if you are relying on acute medication often. A GP, pharmacist, or migraine specialist can help you understand whether your current treatment approach is still suitable.
Questions to Ask Your Doctor or Pharmacist
- Could my skin or scalp sensitivity be allodynia?
- Should I be treating my migraine earlier in the attack?
- Is my current acute migraine medication still appropriate?
- Could frequent allodynia suggest that I need a preventive treatment review?
- Can I safely combine nutritional supplements with my current medications?
FAQs About Allodynia and Migraine
1. What does allodynia feel like?
Allodynia can feel like tenderness, burning, stinging, soreness, or sharp pain from touch that would not normally hurt. For example, brushing your hair, wearing glasses, or feeling shower water on your skin may suddenly become painful during a migraine attack.
2. Is allodynia a serious migraine symptom?
Allodynia is a recognised migraine symptom and is often linked to central sensitisation. It does not always mean something dangerous is happening, but it can suggest the migraine attack has progressed. If it is new, severe, or different from your usual symptoms, speak with a healthcare professional.
3. Why is it better to treat migraine before allodynia starts?
Allodynia may appear once the nervous system has become more sensitised. At that stage, the migraine can be harder to manage for some people. Following an agreed treatment plan early in an attack may improve the chance of relief for some people.
4. Can allodynia happen without head pain?
Some people may notice skin or scalp sensitivity as part of a migraine pattern, even when head pain is mild or not the main symptom. Migraine can involve many nervous system symptoms, including light sensitivity, sound sensitivity, nausea, aura, and touch sensitivity.
Final Thoughts
Allodynia is one of the clearest signs that migraine is more than “just a headache.” It shows how sensitive the nervous system can become during an attack, turning ordinary touch into pain.
If you experience allodynia, it may be helpful to track when it appears and discuss it with a healthcare professional. Treating migraine early, reducing sensory stress, and supporting your overall migraine-management plan may all play a role in longer-term management.
Further reading and evidence:
We take care when selecting ingredients that are often discussed in relation to natural migraine support, and we also value the feedback we receive from customers about their own experiences. Readers who wish to explore the wider evidence for themselves can review independent migraine guidance and educational resources from recognised sources in the UK, Germany, Australia, and the USA. These sources include discussion of high-dose riboflavin (vitamin B2), and some also discuss coenzyme Q10, magnesium, feverfew, and other supportive ingredients.
If you are interested in the ingredients and supportive options mentioned in this article, you may wish to review the wider evidence for yourself. Independent migraine guidance and educational resources from recognised sources in the UK, Germany, Australia, and the USA include discussion of riboflavin (vitamin B2), and some also discuss coenzyme Q10, magnesium, feverfew and other supportive ingredients.
Readers can review these sources for themselves here:
NICE (UK): https://www.nice.org.uk/guidance/cg150
Australia: https://headacheaustralia.org.au/migraine/treatment-options/
USA: https://www.aafp.org/pubs/afp/issues/2019/0101/p17.html.
Please remember: migraine can affect everyone differently, and preventive treatment is not always something that can be judged straight away. NICE advises reviewing migraine prophylaxis 3 to 6 months after starting treatment, so it can take time to understand how well an approach is working for you. If you are unsure, or would like advice tailored to your own situation, please speak with a doctor, pharmacist, or other qualified healthcare professional.