What Is Scleral Icterus?

Scleral icterus refers to the yellowing of the white part of your eyes (the sclera). It’s one of the most noticeable signs of jaundice, a condition where excess bilirubin builds up in your body. While a mild change in eye color may not signal an emergency, it’s important to understand what causes scleral icterus and when to seek medical attention.

Why the Whites of Eyes Turn Yellow

Bilirubin is a yellow pigment created when your body breaks down old red blood cells. Normally, the liver processes bilirubin and sends it to your intestines for removal. When this process is disrupted, bilirubin can accumulate in your bloodstream and deposit in tissues, including the sclera. The sclera tends to pick up bilirubin more readily than skin because its connective tissue has a high affinity for the pigment.

How Bilirubin Builds Up

1. Unconjugated (Indirect) Bilirubin

   • Produced from the breakdown of hemoglobin.
   • Travels in the bloodstream bound to albumin until it reaches the liver.

2. Conjugated (Direct) Bilirubin

   • In the liver, enzymes convert unconjugated bilirubin into a water-soluble form.
   • This form is excreted into bile and then into the digestive tract.

When either step is impaired, bilirubin levels rise, leading to jaundice and scleral icterus.

Common Causes of Scleral Icterus

Disruptions can occur before, within, or after the liver. Key categories include:

Pre-hepatic (Before the Liver)

• Hemolytic anemias (e.g., hereditary spherocytosis, sickle cell disease)
• Rapid breakdown of red blood cells (e.g., transfusion reactions)

Hepatic (Within the Liver)

• Viral hepatitis (A, B, C, E)
• Alcoholic liver disease
• Nonalcoholic fatty liver disease (NAFLD)
• Genetic disorders (e.g., Gilbert’s syndrome, Wilson’s disease)

Post-hepatic (After the Liver)

• Gallstones blocking bile ducts
• Tumors in the bile ducts or pancreas
• Primary sclerosing cholangitis (inflammation/scarring of bile ducts)

Signs and Symptoms to Watch For

Scleral icterus often comes with other symptoms. Not everyone will experience all of these, but you might notice:

• Yellowing of skin (especially palms and soles)
• Dark urine (tea-colored)
• Pale or clay-colored stools
• Itchy skin (pruritus)
• Abdominal pain or tenderness (especially upper right side)
• Fatigue and weakness
• Nausea or loss of appetite

If you see yellowing in your eyes, it’s wise to note any of these accompanying signs.

Diagnosing the Cause

When you visit a healthcare provider, they will:

1. Take a medical history
2. Perform a physical exam (checking for jaundice, liver size, tenderness)
3. Order blood tests:
   • Total and direct bilirubin levels
   • Liver enzymes (ALT, AST, ALP, GGT)
   • Complete blood count (CBC)
   • Markers for viral hepatitis and autoimmune liver diseases
4. Use imaging studies if needed:
   • Ultrasound of the liver and bile ducts
   • CT or MRI scans
5. Consider a liver biopsy when the diagnosis remains unclear

Early evaluation helps pinpoint whether the problem lies in blood cells, the liver, or bile flow.

Treatment Approaches

Addressing scleral icterus means treating the underlying cause. Depending on your diagnosis, you may encounter:

• Medications

  • Antivirals for hepatitis
  • Drugs to dissolve or prevent gallstones
  • Immunosuppressants for autoimmune hepatitis

• Procedures

  • Endoscopic removal of bile duct stones (ERCP)
  • Surgery to relieve bile duct obstructions or remove tumors

• Supportive Care

  • Adequate hydration and nutrition
  • Avoiding alcohol or other liver toxins
  • Close monitoring of liver function

Most mild cases resolve once bilirubin levels return to normal. Chronic or severe liver diseases may require long-term management or, rarely, liver transplantation.

When to Seek Help

While scleral icterus itself isn’t painful, it can signal a serious health issue. Seek immediate medical attention if you experience:

• Severe abdominal pain
• Confusion or altered mental status
• Rapid heartbeat or breathing
• Signs of bleeding (easy bruising, blood in vomit or stool)

For milder concerns, you might consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker to get guidance on next steps.

Key Takeaways

• Scleral icterus is the yellowing of the eye’s white part due to bilirubin buildup.
• Causes fall into pre-hepatic, hepatic, and post-hepatic categories.
• Other signs include dark urine, pale stools, itchiness, and fatigue.
• Diagnosis involves blood tests, imaging, and sometimes biopsy.
• Treatment targets the root cause, from medications to procedures.
• Always monitor for severe symptoms and get prompt care if they occur.

If you notice yellowing in your eyes or any warning signs, speak to a doctor right away. Early evaluation and treatment can make a big difference in outcomes, especially if the cause is life-threatening or serious.