Obstetric cholestasis: itching in pregnancy that needs checking
If you have intense itching on the palms of your hands or the soles of your feet during pregnancy, and there is no rash on the skin, please contact your midwife or maternity unit that day or by the next working day at the latest. Do not wait to see if it settles on its own. This type of itching can be a sign of obstetric cholestasis, a liver condition that needs a blood test to confirm and monitoring to keep you and your baby safe.
This article explains what obstetric cholestasis is, how it is diagnosed, what treatment looks like, and what it means for your baby. It is based on guidance from the Royal College of Obstetricians and Gynaecologists (RCOG Green-top Guideline 43), the NHS, and ICP Support (icpsupport.org), which is the UK's leading charity for people affected by the condition.
What is obstetric cholestasis?
Obstetric cholestasis, also called intrahepatic cholestasis of pregnancy (ICP), is a liver condition that only occurs during pregnancy. In a healthy pregnancy, the liver processes bile acids and passes them through the digestive system. In obstetric cholestasis, this process is disrupted and bile acids build up in the bloodstream instead. The cause is not fully understood, but it involves a combination of genetic factors, pregnancy hormones and environmental influences.
The condition affects roughly 0.5 to 1.5 per cent of pregnancies in the UK. It is more common in some populations, including South Asian and Chilean communities, and in twin pregnancies. It most often begins in the third trimester, after about 28 weeks, though it can start earlier in some cases.
Obstetric cholestasis is a condition that your maternity team manages carefully. It is not an emergency in the same way as a sudden dramatic symptom, but it does need to be reported and assessed promptly because of the risks it carries for your baby.
The key symptom: itching without a rash
The main symptom of obstetric cholestasis is intense, persistent itching that has no visible cause on the skin. Your skin looks completely normal. There are no spots, no redness, no raised patches, and no visible rash of any kind. The itch comes from the bile acids that have built up in the body.
It typically affects the palms of the hands and soles of the feet first, though it can spread to the arms, legs, back and torso. It is almost always worse at night, and for many people it is severe enough to prevent sleep. Scratching does not relieve it.
Some people also notice other signs alongside the itching:
- Dark urine
- Pale or greasy stools
- Mild jaundice, a slight yellowing of the skin or the whites of the eyes
- A general feeling of being unwell or nauseous
These additional signs are not present in everyone, but if you notice any of them alongside itching, mention them to your midwife when you call.
Normal pregnancy itching versus obstetric cholestasis
Itching in pregnancy is common. As your skin stretches to accommodate a growing bump, it can feel dry, tight and uncomfortable. Conditions like PUPPP (pruritic urticarial papules and plaques of pregnancy) and other pregnancy-related skin changes can cause itching too, and these typically come with a visible rash or red patches.
The important difference with obstetric cholestasis is the absence of any rash. If your skin looks completely normal and the itch is concentrated on your palms or soles, particularly if it is worse at night, this pattern does not match ordinary pregnancy skin stretching. It needs to be checked.
You do not need to diagnose yourself. If you are not sure whether your itching is normal or not, contact your midwife and describe what you are experiencing. They will decide whether a blood test is needed. That is exactly what they are there for.
Why obstetric cholestasis matters for your baby
The reason obstetric cholestasis needs prompt attention is that raised bile acids in the blood are associated with increased risks for your baby. These include a higher likelihood of preterm labour, fetal distress during labour, and, in cases with very high bile acid levels, an increased risk of stillbirth.
The risk to the baby is related to the level of bile acids in the blood. Higher levels carry higher risk, which is why monitoring is so important once a diagnosis is made. Babies of mothers with obstetric cholestasis are watched closely throughout the remainder of pregnancy.
With good care, the outcome for most babies is positive. The risks are why the condition is taken seriously, not to alarm you, but because early diagnosis and careful management make a real difference. The sooner your midwife knows about your symptoms, the sooner you can both be monitored properly.
How obstetric cholestasis is diagnosed
Your midwife or doctor will arrange a blood test to check your serum bile acid level. This is the key marker for obstetric cholestasis. Raised serum bile acids, combined with the characteristic itch without a rash, are what confirm the diagnosis. Liver function tests may also be done and can show abnormal results in some people with the condition, but bile acid levels are the main diagnostic test.
Sometimes the first blood test comes back within the normal range even when symptoms are present. If your itching continues or gets worse, ask for the test to be repeated. Bile acid levels can fluctuate and may not be raised on every test, particularly in the early stages. RCOG guidance recommends repeat testing if symptoms persist and the initial result is normal.
Obstetric cholestasis cannot be diagnosed from symptoms alone, and a normal first result does not rule it out if your symptoms are consistent with the condition. Keep in contact with your midwife if itching continues.
Treatment and monitoring
Once obstetric cholestasis is confirmed, your care will typically include the following.
- Ursodeoxycholic acid (UDCA): this is the first-line treatment. UDCA is a naturally occurring bile acid that helps reduce the levels of more harmful bile acids in the blood. For many people, it provides significant relief from itching and brings bile acid levels down. It has a good safety record in pregnancy. Your doctor will prescribe it and explain the dose.
- Regular bile acid monitoring: blood tests will be repeated at regular intervals to track your levels and adjust treatment if needed.
- Fetal wellbeing checks: your care team will monitor your baby more frequently. This may include cardiotocography (CTG) to check the baby's heart rate and movement checks. Ask your team exactly what monitoring they are planning for you.
- Planned early delivery: because the risks to the baby rise as bile acid levels increase, many maternity units recommend delivering the baby before the due date. The timing depends on your bile acid levels and overall clinical picture, but is often between 35 and 37 weeks. Your obstetrician will discuss the timing and the method of delivery with you.
Some antihistamines may help with sleep if the itch is severe at night, though they do not treat the underlying cause. Ask your midwife or doctor which antihistamines are safe to take during pregnancy before using any.
When to contact your midwife
Contact your midwife or maternity unit the same day, or by the next working day at the latest, if you have:
- Itching on the palms of your hands or soles of your feet with no rash
- Intense itching anywhere on your body with no visible rash, particularly if it is worse at night
- Any of the additional signs mentioned above, such as dark urine, pale stools, or mild yellowing of the skin
If you already have a diagnosis of obstetric cholestasis and your itching gets significantly worse, your baby's movements reduce, or you are worried at any point, call your maternity unit straight away. You do not need to wait for a scheduled appointment.
Obstetric cholestasis and future pregnancies
If you have had obstetric cholestasis in one pregnancy, the likelihood of it recurring in a future pregnancy is high: around 60 to 90 per cent. This does not mean a future pregnancy will be unsafe, but it does mean that forward planning matters.
When you become pregnant again, tell your midwife at your booking appointment that you have had obstetric cholestasis before. This will allow them to arrange bile acid checks earlier in your pregnancy and to begin monitoring as soon as any symptoms appear. Being upfront about your history means any recurrence is caught quickly and managed from the start.
ICP Support (icpsupport.org) has detailed guidance on planning a subsequent pregnancy after obstetric cholestasis, including what questions to ask at your booking appointment and what monitoring to expect.
Frequently asked questions
What does obstetric cholestasis feel like?
The main symptom is an intense itching sensation, most often on the palms of the hands and the soles of the feet, though it can spread to the arms, legs or the whole body. The itch tends to be worse at night and can seriously disrupt sleep. There is no rash — the skin looks completely normal. Some people also notice dark urine, pale stools, or mild jaundice, though these are less common. If you have itching of the palms or soles without any rash, contact your midwife or doctor that day.
Does obstetric cholestasis always have a rash?
No, and this is what sets it apart from other pregnancy itching. Obstetric cholestasis causes no rash at all. The skin looks completely normal even though the itch can be very intense. If you have itching with a visible rash, red or raised patches, or very dry skin, this is more likely to be a skin condition related to the physical changes of pregnancy and is usually not cause for concern. If you are unsure, contact your midwife — they can assess you and arrange a blood test to rule out cholestasis.
When should I contact my midwife about itching in pregnancy?
Contact your midwife or maternity unit the same day, or by the next working day at the latest, if you have itching on the palms of your hands or the soles of your feet without a rash. Do not wait to see whether it improves on its own. If the itch is intense, disturbing your sleep, or spreading across your body without a rash, tell your midwife that day. They will arrange a blood test to check your bile acid levels, which is how obstetric cholestasis is diagnosed.
How is obstetric cholestasis treated?
The most commonly used treatment is ursodeoxycholic acid (UDCA), a medication that helps reduce bile acid levels in the blood and usually provides significant relief from itching. You will also have regular blood tests to monitor your bile acid levels and checks on your baby's wellbeing. Because of the associated risks, many maternity teams recommend early delivery, usually between 35 and 37 weeks, depending on how high your bile acid levels are and the overall clinical picture. Your midwife and obstetrician will explain the plan that is right for your situation.
Does obstetric cholestasis affect my baby?
Obstetric cholestasis is associated with an increased risk of preterm birth, fetal distress and, in cases with very high bile acid levels, stillbirth. This is why reporting symptoms promptly and receiving regular monitoring matters so much. With careful monitoring, early treatment and planned delivery at the right time, the outcome for most babies is good. The increased risks are why your care team takes this condition seriously, even when your symptoms feel manageable.
Will I get obstetric cholestasis again in future pregnancies?
The rate of recurrence is high, around 60 to 90 per cent of people who have had obstetric cholestasis will experience it again in a subsequent pregnancy. It is important to tell your midwife about your history at your booking appointment, so that blood tests to check bile acid levels can be arranged early and monitoring can begin as soon as symptoms appear. Being prepared means any recurrence can be caught and managed quickly.
Log your symptoms and keep your midwife in the loop
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