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Wilson Disease

Posted Jun 02 2009 4:40pm

Wilson disease causes the body to retain copper. The liver of a person who has Wilson disease does not release copper into bile as it should. Bile is a liquid produced by the liver that helps with digestion. As the intestines absorb copper from food, the copper builds up in the liver and injures liver tissue. Eventually, the damage causes the liver to release the copper directly into the bloodstream, which carries the copper throughout the body. The copper buildup leads to damage in the kidneys, brain, and eyes. If not treated, Wilson disease can cause severe brain damage, liver failure, and death.

Wilson disease is hereditary. Symptoms usually appear between the ages of 6 and 20 years, but can begin as late as age 40. The most characteristic sign is the Kayser-Fleischer ring—a rusty brown ring around the cornea of the eye that can be seen only through an eye exam. Other signs depend on whether the damage occurs in the liver, blood, central nervous system, urinary system, or musculoskeletal system. Many signs can be detected only by a doctor, like swelling of the liver and spleen; fluid buildup in the lining of the abdomen; anemia; low platelet and white blood cell count in the blood; high levels of amino acids, protein, uric acid, and carbohydrates in urine; and softening of the bones. Some symptoms are more obvious, like jaundice, which appears as yellowing of the eyes and skin; vomiting blood; speech and language problems; tremors in the arms and hands; and rigid muscles.

Wilson disease is diagnosed through tests that measure the amount of copper in the blood, urine, and liver. An eye exam would detect the Kayser-Fleischer ring.

The disease is treated with lifelong use of D-penicillamine or trientine hydrochloride, drugs that help remove copper from tissue, or zinc acetate, which stops the intestines from absorbing copper and promotes copper excretion. Patients will also need to take vitamin B 6 and follow a low-copper diet, which means avoiding mushrooms, nuts, chocolate, dried fruit, liver, and shellfish.

Wilson disease requires lifelong treatment. If the disorder is detected early and treated correctly, a person with Wilson disease can enjoy completely normal health.

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