Most itching in pregnancy is ordinary: skin stretching over a growing bump, dry skin, hormones. It is annoying and it is not dangerous. But one specific pattern is not ordinary at all, and it is the reason this page exists — because the difference between the two is something you can recognise at home, and recognising it early changes what happens next.
This guide sets out what causes routine pregnancy itching, exactly what the cholestasis pattern looks like, what the blood test involves and what the numbers mean, and what genuinely relieves the itch while the cause is being checked.
Read this first. Itching that is intense, has no rash, is worse on the palms of your hands and soles of your feet, and is worse at night can be intrahepatic cholestasis of pregnancy. Tell your midwife or maternity unit the same day and ask for a bile acid blood test. Do not wait for your next appointment, and do not wait to see whether it settles.
The Ordinary Kind
Most pregnancy itching has a dull explanation:
- Stretching skin over the abdomen and breasts. Often the first sign that stretch marks are forming, before anything is visible.
- Dry skin, made worse by hot showers and central heating.
- Increased blood flow to the skin, which can make you feel itchy and warm generally.
- Existing conditions such as eczema, which can flare or improve in pregnancy.
This kind responds to moisturiser, cool water and loose clothing. It is not usually worse at night in any dramatic way, and it does not concentrate on your palms and soles.
The Pattern That Matters
| Ordinary itching | Possible cholestasis | |
|---|---|---|
| Rash | Often there is one | Classically none to see |
| Where | Over the bump, breasts, dry patches | Anywhere, but often worst on palms and soles |
| When | Any time, mild | Typically much worse at night |
| Intensity | Irritating | Intense — keeps you awake, you scratch until you break the skin |
| Response to moisturiser | Helps | Barely touches it |
Other things sometimes reported alongside it: dark urine, pale stools, and yellowing of the skin or the whites of the eyes. Any of those with itching is a same-day call regardless of everything else in this table.
What Cholestasis Is
Bile acids normally flow from the liver into the gut. In intrahepatic cholestasis of pregnancy that flow slows and bile acids build up in the blood, which is what causes the itching. It affects around 1 in 140 pregnant women in the UK, and symptoms typically start from around 28 weeks, though it can appear earlier.
It matters because of the baby, not the itch. Cholestasis is associated with an increased risk of stillbirth, preterm birth, and meconium-stained amniotic fluid, and the risk of fetal death correlates most strongly with bile acid levels of 100 micromoles per litre or above. That is the whole reason it is treated as urgent rather than uncomfortable.
The Blood Test
Your skin is examined first, to check the itching is not eczema or another skin condition. Then blood is taken for liver function tests and total bile acids. A total bile acid level above 10 micromoles per litre is the usual diagnostic threshold.
One normal result does not settle it. Bile acids can rise after the itching starts. If the itching continues, go back and ask for the test to be repeated — this is a recognised part of managing the symptom, not you being difficult.
If cholestasis is confirmed, what follows is monitoring rather than a single treatment: repeat bile acid and liver tests, closer surveillance of the baby, ursodeoxycholic acid in many cases, and a planned conversation about the timing of birth based on your levels. Our guide to blood tests in pregnancy covers how the rest of the panel fits together.
Relieving the Itch Itself
All of this is for comfort. None of it treats the cause, and none of it is a reason to delay the test.
What helps
- Cool or lukewarm baths and showers
- Unperfumed emollient, kept in the fridge
- Loose cotton clothing, layers you can remove
- A cool bedroom and light bedding
- Keeping nails short, so scratching does less damage
- Hot water — it feels good for a moment and makes it worse
- Perfumed soaps, bubble baths and scented lotions
- Waiting to see whether it settles, if the pattern above fits
At a Glance
Ordinary pregnancy itching is stretched, dry skin and it responds to moisturiser and cool water. Intense itching with no rash, worse on the palms and soles, and worse at night, is the pattern of intrahepatic cholestasis — around 1 in 140 pregnancies, usually from about 28 weeks. It is diagnosed by a bile acid blood test, with above 10 micromoles per litre as the usual threshold, and it matters because of the risk to the baby, particularly at levels of 100 and over. Tell your midwife the same day, and ask again if the itching continues after a normal result.
Inside Baby Novum. The lab journal keeps each result dated, with the values and a photo of the printout — so a repeat bile acid test sits next to the previous one and the trend is visible rather than remembered.
Next: Blood Tests in Pregnancy → · Stretch Marks → · Third Trimester Guide →
Frequently Asked Questions
Is itching normal in pregnancy?
Mild itching is common and usually comes from skin stretching over the bump and breasts, or from dry skin and raised hormone levels. It is generally worth mentioning but not alarming. Itching that is intense, has no rash and is worse on the palms and soles is a different situation and needs checking.
What is intrahepatic cholestasis of pregnancy?
It is a liver condition in which bile acids build up in the blood instead of flowing normally. The main symptom is itching, usually without a rash. It affects around 1 in 140 pregnant women in the UK and matters because it raises the risk of stillbirth and preterm birth, so it is monitored closely once diagnosed.
What does cholestasis itching feel like?
Intense and relentless, often bad enough to keep you awake or make you scratch until the skin breaks. It can be anywhere on the body but is frequently worse on the palms of the hands and the soles of the feet, and it is typically worse at night. Classically there is no rash to see.
When in pregnancy does cholestasis start?
Symptoms typically begin from around 28 weeks — the late second to early third trimester — although it can develop earlier. That timing overlaps with the weeks when stretch-mark itching also appears, which is exactly why the pattern matters more than the date.
How is cholestasis diagnosed?
With blood tests. Your skin is examined first to rule out skin conditions such as eczema, then blood is taken for liver function and total bile acids. A total bile acid level above 10 micromoles per litre is the usual diagnostic threshold. One normal result does not close the question — if the itching continues, the test is repeated.
What is the treatment for cholestasis?
Regular monitoring of bile acids and liver function, closer surveillance of the baby, and a planned discussion about when to give birth. Ursodeoxycholic acid is commonly prescribed. Creams, cool baths and loose cotton clothing help the itch itself but do nothing to the underlying condition.
Does cholestasis harm the baby?
It raises the risk of stillbirth, preterm birth and meconium-stained fluid, and the risk is highest when bile acid levels reach 100 micromoles per litre or above. This is why the diagnosis leads to extra monitoring and a plan for delivery timing rather than watchful waiting.
What can I do about the itching itself?
Cool or lukewarm baths and showers, unperfumed emollients kept in the fridge, loose cotton clothing, and keeping the room cool at night. Avoid hot water, which makes it worse. None of this replaces the blood test — treat the symptom while the cause is being checked.