# Jaundice in Pregnancy Differential

> Jaundice in pregnancy for NEET-PG Obstetrics and Gynaecology, separating cholestasis, fatty liver, HELLP and hepatitis E by trimester and biochemistry.

- Canonical URL: https://prepelephant.com/topics/neet-pg/obstetrics-and-gynaecology/jaundice-in-pregnancy-differential
- Exam / course: NEET-PG · Subject: Obstetrics and Gynaecology
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-08
- Last updated: 2026-10-08
- Reference basis: Williams Obstetrics; Dutta's Textbook of Obstetrics; Harrison's Principles of Internal Medicine
- How to cite: "Jaundice in Pregnancy Differential", PrepElephant, https://prepelephant.com/topics/neet-pg/obstetrics-and-gynaecology/jaundice-in-pregnancy-differential

## Direct answer

Jaundice in pregnancy has three pregnancy-specific causes that must be separated from coincidental liver disease: intrahepatic cholestasis of pregnancy, acute fatty liver of pregnancy and HELLP syndrome. Each differs by trimester and biochemistry, with raised bile acids in cholestasis, low glucose and raised ammonia in fatty liver, and haemolysis with low platelets in HELLP. Early recognition matters because all three can threaten the mother and fetus.

## What you must remember

- **Intrahepatic cholestasis of pregnancy:** pruritus of the palms and soles in the second or third trimester, with serum bile acids of 10 μmol/L or more.
- **Cholestasis treatment:** ursodeoxycholic acid is the drug usually given to relieve itching and lower bile acids (benefit on itch and stillbirth is modest in recent trials), and delivery is usually planned around 37 to 38 weeks, individualised.
- **Acute fatty liver of pregnancy:** third trimester nausea, vomiting, abdominal pain and polyuria, often with hypoglycaemia and raised ammonia.
- **AFLP management:** urgent delivery after stabilisation, with support for coagulopathy, hypoglycaemia and renal failure.
- **HELLP syndrome:** haemolysis, elevated liver enzymes and low platelets, usually in the third trimester as part of pre-eclampsia, with raised LDH.
- **Viral hepatitis:** hepatitis E is important in India and carries high mortality in pregnancy, especially in the third trimester.
- **Biliary causes:** gallstones and choledocholithiasis are coincidental causes, diagnosed by ultrasound, and surgery can be done safely in pregnancy when needed.

## A comparison of the pregnancy-specific causes

A 26-year-old at 34 weeks has jaundice and vomiting. Trimester and the pattern of biochemical change, rather than bilirubin alone, point to the right diagnosis, so the table sets the main features side by side.

| Condition | Typical timing | Key biochemistry |
|---|---|---|
| Intrahepatic cholestasis | Second and third trimester | Raised bile acids, mild ALT rise |
| Acute fatty liver | Late third trimester | Low glucose, raised ammonia, coagulopathy |
| HELLP syndrome | Late third trimester or postpartum | Haemolysis, raised LDH, low platelets |
| Hepatitis E | Any trimester, severe in the third | Raised ALT, anti-HEV IgM positive |
| Biliary obstruction | Any trimester | Raised ALP and GGT, dilated ducts on ultrasound |

Haemolysis points towards HELLP rather than fatty liver, while low glucose and raised ammonia point towards AFLP. The table is a starting point, and imaging and serology complete the picture.


Bilirubin alone rarely separates these conditions, so the full panel is reviewed together. Liver function tests should be repeated over days, since acute fatty liver can worsen quickly.

## Where the exam tries to catch you

Jaundice questions reward candidates who link the trimester and the lab pattern to a single diagnosis.

- **Trap:** "Pruritus without a rash is allergy and needs reassurance." — **Correct:** itch of the palms and soles in late pregnancy is intrahepatic cholestasis until bile acids prove otherwise.
- **Trap:** "A normal bilirubin excludes liver disease in pregnancy." — **Correct:** ICP and HELLP can show only modest bilirubin rise, so check bile acids, LDH and platelets as well.
- **Trap:** "Mildly raised transaminases with jaundice always mean ICP." — **Correct:** AFLP and hepatitis E can look similar, and fulminant features demand urgent delivery and specialist care.

## Frequently asked questions

### Which bile acid level defines intrahepatic cholestasis of pregnancy?

Intrahepatic cholestasis of pregnancy is usually diagnosed when serum bile acids are 10 μmol/L or more, together with pruritus, most often of the palms and soles in the second or third trimester. Liver enzymes may rise only mildly, so bile acids are the key test in this condition.

### What is the first-line treatment for intrahepatic cholestasis of pregnancy?

Ursodeoxycholic acid is the drug usually given for intrahepatic cholestasis of pregnancy to relieve pruritus and lower serum bile acids, although recent trial evidence of benefit is modest. Delivery timing is then individualised, commonly around 37 to 38 weeks, because stillbirth risk rises with severe cholestasis.

### Why is acute fatty liver of pregnancy a medical emergency?

Acute fatty liver of pregnancy is an emergency because it can progress rapidly to liver failure, coagulopathy, hypoglycaemia and renal failure in the mother. Prompt delivery after stabilisation is the definitive treatment, planned with intensive care and hepatology support.

### How does HELLP syndrome differ from acute fatty liver of pregnancy?

HELLP syndrome shows haemolysis with raised LDH, elevated liver enzymes and low platelets, usually with pre-eclampsia, whereas acute fatty liver shows low glucose, raised ammonia and coagulopathy with nausea and vomiting. Both usually need delivery after stabilisation, so the distinction guides supportive management.