Wilsonm Diases

Lenticular

Wilson’s disease (WD) is a rare inherited disorder in which excessive amounts of copper accumulate in the body. The buildup of copper leads to damage in the kidneys, brain, and eyes. Although copper accumulation begins at birth, symptoms of the disorder appear later in life. The most characteristic symptom of WD is the Kayser-Fleisher ring – a rusty brown ring around the cornea of the eye that can best be viewed using an ophthalmologist’s slit lamp. The primary consequence for most of those with WD is liver disease, appearing in late childhood or early adolescence as acute hepatitis, liver failure, or progressive chronic liver disease in the form of chronic active hepatitis or cirrhosis of the liver. In others, the first symptoms occur later in adulthood and most commonly include slurred speech (dysarthria), difficulty swallowing (dysphagia), and drooling. Other symptoms may include tremor of the head, arms, or legs; impaired muscle tone, and sustained muscle contractions that produce abnormal postures, twisting, and repetitive movements (dystonia); and slowness of movements (bradykinesia). Individuals may also experience clumsiness (ataxia) and loss of fine motor skills. A third of those with WD will also experience psychiatric symptoms such as an abrupt personality change, bizarre and inappropriate behavior, depression accompanied by suicidal thoughts, neurosis, or psychosis. WD is diagnosed with tests that measure the amount of copper in the blood, urine, and liver.
Is there any treatment?


WD requires lifelong treatment, generally using drugs to remove excess copper from the body and to prevent it from re-accumulating. Zinc salt, which blocks the absorption of copper in the stomach and causes no serious side effects, is often considered the treatment of choice. Penicillamine and trientine increase urinary excretion of copper; however, both drugs can cause serious side effects. Tetrathiomolybdate is an investigational drug with a lower toxic profile, but it has not been approved by the Food and Drug Administration for the treatment of WD and its long-term safety and effectiveness aren’t known. A low-copper diet may also be recommended, which involves avoiding mushrooms, nuts, chocolate, dried fruit, liver, and shellfish. In rare cases where there is severe liver disease, a liver transplant may be needed. Symptomatic treatment for symptoms of muscle spasm, stiffness, and tremor may include anticholinergics, tizanidine, baclofen, levodopa, or clonazepam.

Hyperintensities in the bilateral basal ganglia and thalami shown by T2-weighted MRI of the brain


What is the prognosis?


Early onset of the disease is worse than late onset in terms of prognosis. If the disorder is detected early and treated appropriately, an individual with WD can usually enjoy normal health and a normal lifespan. If not treated, WD can cause severe brain damage, liver failure, and death. The disease requires lifelong treatment.

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