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Itchy Skin & Liver Problems

Itchy Skin & Liver Problems Itchy Skin & Liver Problems

Overview

Itchy skin, or pruritus, can occur with a wide variety of medical conditions and be very distressing. Liver diseases with bile obstruction commonly have itching as a symptom, but the reason for itching is not clearly understood. Treatment requires either reversing the bile obstruction or medications to suppress the itch.

Cholestatic Liver Disease

Your liver continuously produces bile, which is important for waste removal by the liver and absorption of dietary fat from the intestines. Bile is produced in the liver cells, travels out a network of bile ducts through the pancreas and empties into your small intestine. A blockage anywhere along this pathway can slow or stop the flow of bile, called cholestasis, and lead to increased levels of bile in your bloodstream. Yellowing of the skin and eyes, dark urine and light stools appear as the bile levels climb, often accompanied by widespread itching. Bile flow obstruction can occur inside the liver as seen with hepatitis, cirrhosis, drugs or cholestasis of pregnancy, or occur outside the liver due to gallstones, tumors or inflammation of the pancreas.

Pruritus and Liver Disease

Widespread, or generalized, itching from liver disease can appear before other signs or symptoms of cholestasis develop. Itching is typically most severe on the palms and soles of the feet, and worse in the late evening and night. No rash or other lesions are present, except when the act of scratching itself damages the skin. Unless liver disease is obviously the cause of itching, your health care provider will perform tests to confirm the diagnosis, including a blood bilirubin level, liver function tests and possibly a liver ultrasound to look for bile duct changes.

Explanation for Cholestatic Itching

The reason for generalized itching with liver disease is not well understood, other than the apparent link with obstructed bile flow. Bile salts, chemicals closely related to bile, are deposited in your skin when bilirubin levels rise and are thought to be the primary cause of itching. Detailed research and explanations are difficult when a symptom like itching occurs with multiple different diseases, is experienced somewhat differently by each individual and responds to different treatments in different cases.

Treatment of Itching with Cholestasis

Resolving the cause of bile flow obstruction is the best treatment for itching with liver disease, but when this isn't immediately possible several medications can help relieve the itch. Cholestyramine is used most often, and works by binding bile salts in your intestines so they are excreted rather than reabsorbed back into the bloodstream. Rifampicin, an antibiotic, causes an increase in liver metabolism of bile and other chemicals, and relieves itching in some people. Drugs that block opioid receptors in the body also sometimes help, suggesting that your body's own endorphins may play a role in pruritus. Stopping any drugs that can further harm the liver, such as alcohol, is also recommended.

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