About 10 to 15 percent of cases of CJD in the United States are hereditary. Hereditary CJD-There may be a known gene mutation that occurs in a family.This accounts for at least 85 percent of cases. Sporadic CJD-The disease develops in someone when the cause is unknown.
There are three major categories of CJD, including: Some symptoms of CJD can be similar to symptoms of other progressive (continuing to worsen) neurological disorders, such as Alzheimer's and Huntington's disease. However, these symptoms tend to worsen faster in CJD than in Alzheimer's disease or most other types of dementia. Insomnia or changes in sleeping patterns.Impaired thinking, memory, and judgment.Involuntary (unwanted) muscle jerks (myoclonus) or muscle movementĮarly symptoms of the disease may include:.Severe mental deterioration and dementia.There are about 350 cases per year in the U.S. Creutzfeldt-Jakob disease (CJD) is a rare, rapidly worsening brain disorder that causes unique changes in brain tissue and affects muscle coordination thinking, and memory.
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