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Short answer: in most cases, headaches in pregnancy are normal and benign, especially in the first trimester, but intense or sudden pain after the 20th week requires immediate medical assessment.
Is Pregnancy Headache Common?
Yes - and the figures are clear. It is estimated that around 39% of women have headaches at some point during pregnancy, They are more common in the first trimester. Some start having them when they become pregnant; others, with a history of migraine, As a result, they notice changes in the pattern of seizures. None of this is abnormal: the body is going through the biggest hormonal and physiological changes of its life, and the brain responds to these changes.
Why Does Your Head Hurt More During Pregnancy?
There is no single cause. Pregnancy headaches are usually the result of a combination of several overlapping factors.
Hormonal changes
The levels of oestrogen e progesterone rise rapidly in the first few weeks and act directly on the blood vessels in the brain, dilating them and making them more sensitive. In women with previous migraine, hormones act as a switch: in migraine with an aura (with visual symptoms before the pain), the attacks tend to continue or worsen; in migraine no aura, There is often improvement from the second trimester onwards.
Other frequent triggers
In addition to hormones, there are everyday factors that intensify during pregnancy and trigger headaches:
- sleep deprivation (insomnia, frequent trips to the toilet)
- dehydration (aggravated by nausea)
- hypoglycaemia (low blood sugar levels)
- sudden reduction in caffeine
- stress and anxiety
- postural changes as the belly grows and creates tension in the cervical area
Keep a bottle of water on you at all times and eat small meals every 3 hours. This solves a good part of the causes of pregnancy headaches. These are two of the most underestimated factors, and also the easiest to correct.
Most Common Types of Headache in Pregnancy
Tension headache
It's more frequent. It is characterised by a pressing pain, as if there were a tight band around the head, usually bilateral (two sides) and of mild to moderate intensity. It is usually accompanied by tension in the neck and shoulders and is strongly associated with stress, poor posture and tiredness.
Migraine
It's a more intense pain, often only on one side of the head, described as pulsating or throbbing. It can be accompanied by nausea, vomiting and exaggerated sensitivity to light and sound. In some women, neurological symptoms appear before the pain - the so-called aura - such as bright spots or momentary visual changes.
When a Headache is a Warning Sign
The vast majority of headaches in pregnancy are benign, but certain patterns require immediate medical assessment, especially since the 20th week, because they can indicate pre-eclampsia - a complication that affects between 3% and 5% of pregnant women.
Seek urgent care if you have a headache:
- For sudden and very intense, peaking in seconds;
- For persistent and not giving in with paracetamol or rest after 2 hours;
- Come with visual changes (blurred vision, bright spots);
- Is accompanied by sudden swelling the face and hands, or pain in the upper abdomen;
- Come up with high blood pressure (above 140/90 mmHg);
- Come with fever, stiff neck, confusion or weakness on one side of the body.
A pre-eclampsia can be silent at first and set in within a few hours. If you have access to a blood pressure monitor at home, and the headache is accompanied by other symptoms, measure it and contact your obstetrician immediately. Don't wait for the next appointment.
How to Relieve a Headache Safely
As many common drugs (ibuprofen, aspirin, various triptans) are contraindicated in pregnancy, treatment almost always starts with non-pharmacological measures. Paracetamol, in controlled doses, is generally the only painkiller considered safe - but even this should only be taken on the advice of your obstetrician.
Non-pharmacological strategies
Most headaches respond well to simple adjustments: adequate hydration (1.5 to 2 litres of water a day), regular meals every 3 hours to avoid sugar crashes, quality sleep (7 to 9 hours), light exercise approved by the obstetrician, cold compresses on the forehead or warm compresses on the back of the neck, and relaxation techniques such as diaphragmatic breathing and mindfulness.
When to consider advanced therapies
For pregnant women with persistent headaches who don't respond to basic measures - and who want to avoid drugs - neuroscience now offers safe alternatives. At NeuroPsyque, two of these options are part of our integrated approach:
- O Neurofeedback is a brain self-regulation technique that trains the brain to break out of hyperactivity patterns associated with pain and stress, without medication and with virtually no side effects.
- A Transcranial Magnetic Stimulation (TMS) is a non-invasive therapy that has been shown to average reductions of 45% in the number of migraine attacks. International guidelines consider any effect on the foetus to be highly unlikely, given that the magnetic field attenuates rapidly with distance. Its use in pregnant women is assessed on a case-by-case basis, in conjunction with the neurologist with the obstetrician.
🧠 Key Points to Retain
- Headaches affect around 39% of pregnant women and are mostly benign.
- The most common causes are hormonal changes, dehydration, lack of sleep, hypoglycaemia and stress.
- The most common types are tension headaches and migraines.
- Intense, sudden pains with visual changes, swelling or hypertension require urgent assessment - they may indicate pre-eclampsia.
- Treatment begins with non-pharmacological measures: hydration, sleep, regular nutrition and stress management.
- For persistent cases, neurofeedback and EMT are safe and effective alternatives, without medication.
FAQs - Frequently Asked Questions
Can I take paracetamol for a headache during pregnancy?
Paracetamol is considered the safest painkiller during pregnancy, but it should be used in the lowest effective dose and for the shortest time possible, always on medical advice. Ibuprofen and aspirin are not recommended, especially in the third trimester.
Do migraines get better or worse during pregnancy?
It depends on the type. Women with migraines no aura tend to improve from the second trimester onwards. Migraines with an aura may persist or worsen.
Is a headache in any trimester equally worrying?
No. Pain in the first trimester is almost always associated with hormonal changes. From the 20th week onwards, any new or intense pain should be assessed more carefully, because it is at this stage that pre-eclampsia can develop.
Is Transcranial Magnetic Stimulation safe for pregnant women?
International guidelines consider it highly unlikely that EMT will have an effect on the foetus, because the magnetic field attenuates rapidly with distance. In selected cases, it is an effective alternative for resistant migraines, always in conjunction with the obstetrician.
When should I go to hospital urgently?
Whenever the pain is very intense, sudden, or is accompanied by blurred vision, swelling of the face and hands, upper abdominal pain, high blood pressure, weakness or confusion. In these cases you should contact your obstetrician as soon as possible and not wait for your next appointment.
