Creutzfeldt-Jakob disease (CJD)
There is currently no single diagnostic test for CJD. When CJD is suspected, the first concern is to rule out treatable forms of dementia such as encephalitis (inflammation of the brain) or chronic meningitis. A neurological examination and spinal tap are often performed to rule out more common causes of dementia. An electroencephalogram (EEG) to record the brain’s electrical pattern can be particularly valuable because it shows a specific type of abnormality in CJD. Computerized tomography (CT) of the brain can help rule out the possibility that the symptoms result from other problems such as stroke or a brain tumor. Magnetic resonance imaging (MRI) brain scans also can reveal characteristic patterns of brain degeneration that can help diagnose CJD.
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