Headache during pregnancy is common — and almost always manageable. For many women, the patterns of their usual migraine change during pregnancy: often improving, sometimes worsening, occasionally appearing for the first time. This page sets out what is typical, what is worth investigating, and where specialist input can help you and your obstetric team make confident, evidence-based decisions about treatment.
Around one in three pregnant women experiences a clinically significant headache at some point during pregnancy. For women with a pre-existing diagnosis of migraine, the picture is more nuanced; some find that their migraine attacks become less frequent or less severe during pregnancy, particularly in the second and third trimesters. A smaller proportion find that pregnancy makes migraine worse, and around 1 in 4 women experience their very first migraine attack during pregnancy.
These different patterns are driven largely by hormonal changes, especially the stable, sustained levels of oestrogen seen across the second and third trimesters. Migraine is sensitive to changes in oestrogen, so steady levels often translate into fewer attacks.
First trimester: Headache is often more frequent in early pregnancy. Sleep disruption, nausea and dehydration, missed meals, fluctuating hormone levels, and the abrupt discontinuation of caffeine or usual migraine treatments all contribute.
Second trimester: For many women with migraine, this is when attacks ease. Stable oestrogen levels, improved sleep, and resolution of first-trimester nausea often combine to give a noticeable period of relief.
Third trimester: Patterns are more variable. New or worsening headache in late pregnancy is the period when specialist review becomes more important, because some serious conditions — including pre-eclampsia — first present this way.
Postpartum: Headache frequently returns in the days and weeks after birth, sometimes more severely than before pregnancy. Sleep deprivation, abrupt hormonal changes, and dehydration during breastfeeding are common contributors. (See: [Headache after birth and during breastfeeding](/headache-postpartum-breastfeeding).)
Many women manage migraine in pregnancy well with their GP and obstetric team, particularly if attacks are infrequent and respond to the usual safe-in-pregnancy approaches.
Specialist headache consultation is most valuable in the following situations:
A specialist consultation lets us review your full headache history, examine you, look carefully at the timing and pattern of your symptoms, and agree a clear plan that fits your stage of pregnancy and is coordinated with your obstetrician.
Most headaches in pregnancy are not dangerous, but a small number can be. Seek urgent medical assessment (A&E, your maternity unit, or 111) for any of the following:
These are not specialist headache problems — they are obstetric and neurological emergencies and need same-day assessment.
Pregnancy narrows the range of acceptable medications and shifts the emphasis towards non-drug approaches, but does not leave you without options.
Decisions are always individualised, based on your symptoms, stage of pregnancy, and overall obstetric picture.
Generally considered safe- always confirm with your obstetrician or GP:
Require careful, individualised discussion:
Generally avoided in pregnancy:
Non-drug approaches are especially valuable in pregnancy: protected sleep, regular meals and hydration, identification and management of migraine triggers, gentle aerobic activity where appropriate, biofeedback and relaxation techniques, and good caffeine management (neither too much, nor an abrupt cut).
Dr Wei sees a substantial number of patients across the fertility journey — IVF, pregnancy, postpartum and breastfeeding — and works closely with London IVF clinics and private maternity units. Many patients begin care during pregnancy and continue through delivery and beyond.
If your headache is happening during fertility treatment or planning, see Headache during IVF.
Paracetamol at standard doses is widely accepted as the first-choice painkiller in pregnancy. As with any medication in pregnancy, the principle is to use the lowest effective dose for the shortest necessary time, and to discuss prolonged or frequent use with your obstetrician or GP.
It can happen, particularly in the first trimester. About 1 in 5 women with pre-existing migraine experience worsening in early pregnancy, and a smaller proportion continue to have worse attacks through pregnancy. Specialist review is reasonable if attacks are frequent, severe, or affecting your ability to function — there are pregnancy-safe options for both acute and preventive management.
Triptans are not formally licensed for use in pregnancy, but for women with significant migraine, the existing observational data — particularly for sumatriptan — is broadly reassuring. The decision is individual: it depends on how severe your migraine is, what alternatives have been tried, and the stage of pregnancy. A specialist consultation can help you reach a clear decision with your obstetrician.
Botox for chronic migraine is not typically continued during pregnancy because the safety data is limited. If you have been receiving Botox, the usual approach is to defer further treatment for the duration of pregnancy and breastfeeding, with a clear plan to restart afterwards if needed.
For an isolated headache or a familiar migraine pattern, your GP or midwife is the right first point of contact.
Certain headache presentations need urgent assessment rather than a routine appointment. Seek urgent medical attention (A&E, your maternity unit, or 111) for a sudden, severe ("thunderclap") headache peaking within seconds; a new severe headache unlike any before; headache with visual disturbance, facial or hand swelling, upper abdominal pain, or a sudden rise in blood pressure (possible pre-eclampsia); headache with new weakness, numbness, speech difficulty, confusion, or seizures; or headache with fever, neck stiffness, or rash.
Specialist headache input becomes valuable when migraine is frequent or severe, when treatments are not working, when your usual plan needs to be adapted for pregnancy, or when you would like the reassurance of a thorough specialist assessment. Specialist care works alongside — not instead of — your obstetric team.
For most women, yes — often within the first one to two weeks postpartum, when oestrogen levels drop quickly and sleep is most disrupted. Planning for this in advance, including agreement on safe acute and preventive treatments compatible with breastfeeding, makes the postpartum period much easier to navigate.
If you are pregnant and would like specialist input on your headache, you can book a consultation online or email info@londonheadachespecialist.com.
Initial consultations are conducted in person at The Guthrie Wing, King's College Hospital, London. Virtual follow-ups are available.
This page provides general information about headache and migraine in pregnancy. It is not a substitute for individual medical advice. Every pregnancy is different, and decisions about treatment should always be made together with your obstetrician, GP, and headache specialist.
London Headache Specialist | Dr Diana Wei