Cholestasis in Pregnancy

What is cholestasis in pregnancy?

Cholestasis in pregnancy, also called intrahepatic cholestasis of pregnancy (ICP) or obstetric cholestasis, is a liver condition that develops only during pregnancy. The word cholestasis means that the flow of bile has slowed or stopped. Bile is a digestive fluid made by the liver, and bile acids are the components of bile that help the body absorb fat. When bile does not flow normally out of the liver, bile acids build up in the blood. In pregnancy, this build-up is thought to be triggered mainly by pregnancy hormones acting on the liver of a woman who is already predisposed to the condition.

The most recognizable feature of cholestasis in pregnancy is intense itching without a rash, most often affecting the palms of the hands and the soles of the feet. The condition usually appears in the third trimester, although it can begin earlier in some women. It typically resolves within days to weeks after the baby is born.

Cholestasis in pregnancy is uncommon, but it is one of the more frequent liver disorders specific to pregnancy. It is generally not dangerous to the mother in the long term, but it is taken seriously because raised bile acids are associated with risks for the baby, including preterm birth and, in more severe cases, stillbirth. For this reason it is usually managed by obstetricians with experience in high-risk pregnancy. At Acibadem, care for this condition is coordinated through the Perinatology (High-Risk Pregnancy) Department.

Cholestasis in pregnancy symptoms

Cholestasis in pregnancy symptoms are often subtle at first and can be mistaken for the ordinary skin itching that many pregnant women experience. The key difference is that itching caused by cholestasis tends to be more intense, tends to worsen at night, and is not accompanied by a rash (although scratching can cause marks on the skin).

• Itching without a rash, frequently starting on the palms and soles and sometimes spreading to the arms, legs, and trunk
• Itching that is worse at night, which can seriously disturb sleep
• Dark urine
• Pale or grayish stools
• Yellowing of the skin or the whites of the eyes (jaundice), which occurs in a minority of women
• Nausea, loss of appetite, or discomfort in the upper right part of the abdomen
• Tiredness beyond what is usual for pregnancy
• Scratch marks or sores caused by persistent scratching

Most women with cholestasis in pregnancy have itching as their only symptom. Jaundice and pale stools suggest a more pronounced disturbance of bile flow and are less common. Symptoms usually begin in the third trimester, but they can start in the second trimester, and rarely earlier. The intensity of itching does not always match the level of bile acids in the blood, which is one reason doctors rely on blood tests rather than symptoms alone to judge severity.

Itching in pregnancy has many possible causes, including dry skin, stretching skin, eczema, and pregnancy-specific rashes. Itching that is persistent, affects the palms and soles, and has no visible rash is the pattern that most often prompts doctors to test for cholestasis.

Causes and risk factors

The exact cholestasis in pregnancy causes are not fully understood, but the condition is believed to result from a combination of hormonal, genetic, and environmental influences.

• Pregnancy hormones. Estrogen and progesterone rise steeply during pregnancy, particularly in the third trimester. In susceptible women, these hormones appear to slow the movement of bile out of liver cells. This is thought to explain why the condition usually appears late in pregnancy and why it is more common in twin or triplet pregnancies, where hormone levels are higher.
• Genetic factors. Cholestasis in pregnancy often runs in families. Variations in genes that control the transport of bile acids across liver cell membranes have been identified in some affected women. Women who carry these variations may have a liver that copes normally outside pregnancy but struggles under the hormonal load of pregnancy.
• Environmental and seasonal factors. The condition has been reported to occur more often in winter months in some regions, which suggests that diet or other environmental factors may play a part, although this is not well understood.

Several factors are associated with a higher chance of developing the condition:

• A personal history of cholestasis in a previous pregnancy, as recurrence is common
• A family history of the condition in a mother or sister
• A pregnancy with twins or more babies
• Pregnancy after in vitro fertilization (IVF)
• Pre-existing liver conditions, including chronic hepatitis C
• A history of gallstones or cholestasis linked to hormonal contraception
• Certain ethnic backgrounds, with higher rates reported in women of South Asian and Latin American origin
• Older maternal age

Having one or more of these risk factors does not mean a woman will develop cholestasis in pregnancy, and many women who develop it have no identifiable risk factor at all.

Cholestasis in pregnancy diagnosis

Cholestasis in pregnancy diagnosis is based on a combination of characteristic symptoms, blood tests, and the exclusion of other causes of itching and abnormal liver tests. There is no single examination finding that confirms it, so laboratory testing is essential.

• Serum bile acid test. This is the most important test. A blood sample is used to measure the total concentration of bile acids. A level above the laboratory’s normal range, in a pregnant woman with typical itching, is the main basis for the diagnosis. Some clinics ask women not to eat for several hours before the test because eating can temporarily raise bile acid levels.
• Liver function tests. These measure liver enzymes such as ALT and AST, as well as bilirubin, the yellow pigment that causes jaundice. Liver enzymes are often mildly to moderately raised in cholestasis of pregnancy. Some liver tests, including alkaline phosphatase, are naturally higher in pregnancy because the placenta produces them, so doctors interpret results using pregnancy-specific reference ranges.
• Repeat testing. Bile acids and liver enzymes may be normal when itching first begins and only become abnormal days or weeks later. If the first result is normal but the itching continues, your doctor may repeat the tests at intervals.
• Tests to rule out other conditions. Because other liver diseases can cause similar blood test changes, doctors may check for viral hepatitis (hepatitis A, B, C, and sometimes others), autoimmune liver disease, and pre-eclampsia or HELLP syndrome, which are pregnancy complications involving high blood pressure and liver involvement.
• Liver ultrasound. An ultrasound scan of the liver and gallbladder may be performed to look for gallstones, bile duct blockage, or other structural problems. In cholestasis of pregnancy the scan is typically normal, which helps support the diagnosis.
• Clotting tests. Because bile acids are needed to absorb vitamin K, and vitamin K is needed for normal blood clotting, doctors sometimes check clotting function, especially if the condition is prolonged or severe.

Once cholestasis in pregnancy is diagnosed, bile acid levels are usually monitored regularly, often weekly, because the highest recorded level helps guide decisions about the timing of delivery. Fetal monitoring, such as checking the baby’s heart rate and growth on ultrasound, is also commonly arranged, although it is important to understand that monitoring cannot reliably predict every complication.

Cholestasis in pregnancy treatment

Cholestasis in pregnancy treatment has two goals: to relieve the mother’s symptoms and to reduce the risk to the baby. The only definitive treatment is delivery, because the condition resolves once the pregnancy ends. Until then, care focuses on medication, monitoring, and careful planning of the birth.

Medication

• Ursodeoxycholic acid (ursodiol). This is the medicine most commonly prescribed. It is a naturally occurring bile acid that helps improve bile flow and can lower the concentration of the more harmful bile acids in the blood. In many women it reduces itching and improves liver test results. Evidence about whether it reduces complications for the baby is mixed, and your doctor can explain the current understanding. It is generally considered safe in pregnancy and is usually taken as tablets until delivery.
• Antihistamines. Certain antihistamines that cause drowsiness may be suggested to help with sleep when night-time itching is severe. They do not treat the underlying condition.
• Vitamin K. If clotting tests are abnormal or the condition is prolonged, a water-soluble form of vitamin K may be recommended to reduce the risk of bleeding during and after delivery.
• Skin care. Cooling creams, emollients (moisturizers), and lukewarm baths may ease discomfort. These measures are supportive only.

Monitoring

Women with cholestasis in pregnancy are usually seen more often than in a routine pregnancy. Bile acid levels and liver tests are typically rechecked at regular intervals, and the baby’s wellbeing may be assessed with heart-rate monitoring and ultrasound. Because complications such as stillbirth can occur suddenly and without warning, doctors also ask women to be alert to changes in the baby’s movements.

Planned delivery

Timing of birth is the central decision in managing this condition. Delivering early reduces the time the baby is exposed to high bile acids, but it also carries the risks associated with prematurity. Doctors weigh these factors against each other, and the decision is individualized. In general, the higher the peak bile acid level, the earlier delivery tends to be recommended. Many guidelines advise planned birth at around 36 to 37 weeks of pregnancy for women with moderately raised bile acids, and earlier when levels are very high or when other complications are present. Women with mildly raised levels may be able to continue closer to term with monitoring. Planned delivery may be by induction of labor or, where there are other obstetric reasons, by cesarean section; cholestasis itself does not usually require a cesarean.

What treatment does not involve

There is no surgical or procedural treatment for cholestasis in pregnancy, and no special diet has been shown to cure it. Some women find that a lower-fat diet reduces nausea, but this should not replace medical care. Herbal or over-the-counter remedies for itching should be discussed with a doctor before use, as some are not safe in pregnancy.

Living with cholestasis in pregnancy and outlook

For the mother, the outlook is generally good. Itching usually improves within a few days after birth and disappears completely within a few weeks. Liver tests typically return to normal within several weeks, and follow-up blood tests after delivery are often arranged to confirm this. If liver tests remain abnormal, further investigation for an underlying liver condition may be suggested.

The main concern is for the baby. Cholestasis in pregnancy is associated with an increased risk of preterm birth (both spontaneous and planned), passage of meconium (the baby’s first stool) into the amniotic fluid before birth, breathing difficulties in the newborn, and stillbirth. The risk of stillbirth appears to be linked to the level of bile acids and is thought to be low when levels are only mildly raised and higher when levels are very high. Careful monitoring and planned early delivery are used to reduce these risks, but no approach can remove them entirely.

Living with the condition during the remaining weeks of pregnancy can be physically and emotionally demanding. Severe itching disrupts sleep, and worry about the baby is common. Practical measures that many women find helpful include keeping the skin cool, wearing loose cotton clothing, keeping fingernails short to limit skin damage from scratching, and asking for support with sleep and daily tasks. Talking openly with the care team about anxiety is reasonable and expected.

Women who have had cholestasis in one pregnancy have a substantial chance of developing it again in a future pregnancy, so early bile acid testing is often recommended if itching appears in a later pregnancy. Some women also develop cholestasis when using estrogen-containing contraception, and doctors may suggest alternative methods. Over the longer term, women with a history of this condition have been reported to have a somewhat higher chance of gallstones and certain liver conditions, which is one reason a follow-up check after delivery is useful.

Frequently asked questions

What are the first symptoms of cholestasis in pregnancy?

The first symptom is usually itching without a rash, most often on the palms of the hands and soles of the feet, and often worse at night. Other symptoms such as dark urine, pale stools, or yellowing of the skin are less common and tend to appear later, if at all. Because ordinary pregnancy itching is very common, testing is the only reliable way to tell the difference.

How is cholestasis in pregnancy diagnosed?

Diagnosis rests on a blood test measuring serum bile acids, together with liver function tests. If bile acids are above the laboratory’s normal range in a woman with typical itching, and other causes of liver problems have been ruled out with tests such as hepatitis screening and a liver ultrasound, the diagnosis is made. Tests may need to be repeated if the first results are normal but itching persists.

What causes cholestasis in pregnancy?

Cholestasis in pregnancy causes are not completely understood. It is believed to happen when pregnancy hormones, especially estrogen and progesterone, slow bile flow in the liver of a woman who is genetically predisposed. Family history, previous cholestasis in pregnancy, twin pregnancy, IVF, and pre-existing liver disease are among the recognized risk factors.

What is the treatment for cholestasis in pregnancy?

Cholestasis in pregnancy treatment usually includes ursodeoxycholic acid to improve bile flow and relieve itching, regular blood tests to track bile acid levels, monitoring of the baby, and a planned delivery, often around 36 to 37 weeks depending on how high the bile acids are. Antihistamines and skin care may help with symptoms, and vitamin K may be given if clotting is affected. The condition resolves after birth.

Is cholestasis in pregnancy dangerous for the baby?

It can be. Raised bile acids are associated with a higher risk of preterm birth, meconium in the amniotic fluid, newborn breathing problems, and stillbirth. The risk appears to be greatest when bile acid levels are very high. Close monitoring and carefully timed delivery are used to lower these risks, though they cannot eliminate them completely.

Will cholestasis in pregnancy go away after birth?

In almost all cases, yes. Itching usually eases within days of delivery and liver tests typically normalize within weeks. Doctors often arrange a follow-up blood test after birth to confirm recovery. If results stay abnormal, further evaluation for another liver condition may be recommended.

Can cholestasis in pregnancy happen again in a future pregnancy?

Recurrence is common. Many women who have had the condition once develop it again in a later pregnancy, sometimes earlier or more severely. For this reason, women with a history of cholestasis in pregnancy are usually advised to report any itching promptly in future pregnancies so that bile acids can be checked early.

When to see a doctor

Any pregnant woman who develops persistent itching, especially itching of the palms and soles or itching that disturbs sleep, should have it assessed rather than assume it is normal. Early testing allows monitoring and treatment to start sooner. Women with a previous history of cholestasis in pregnancy should report symptoms as soon as they appear.

Seek urgent medical attention if you notice any of the following:

• Reduced or changed movements of the baby, or any concern that the baby is moving less than usual
• Yellowing of the skin or eyes (jaundice)
• Severe pain in the upper right abdomen or under the ribs
• Persistent vomiting or inability to keep fluids down
• Severe headache, visual disturbance, or sudden swelling of the face and hands, which can be signs of pre-eclampsia
• Unusual bleeding or bruising, including bleeding gums or nosebleeds
• Vaginal bleeding, leaking fluid, or regular contractions before your due date
• Fever, confusion, or extreme drowsiness

These warning signs do not necessarily mean that something is wrong, but they require prompt evaluation so that the health of both mother and baby can be checked without delay. Care for suspected or confirmed cholestasis in pregnancy is usually provided by an obstetric team experienced in high-risk pregnancy, such as a perinatology unit.