How do you diagnose Creutzfeldt-Jakob disease?

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CJD is diagnosed by a clinical neurological exam and electroencephalography (EEG), which shows characteristic spikes called triphasic sharp waves. Magnetic resonance imaging (MRI) or computed tomography scans (CT) should be done to exclude other forms of dementia, and in CJD typically shows atrophy or loss of brain tissue. Lumbar puncture, or spinal tap, may be done to rule out other causes of dementia (as cell count, chemical analysis, and other routine tests are normal in CJD) and to identify elevated levels of marker proteins known as 14-3-3. Another marker, neuron-specific enolase, may also be increased in CJD. CJD is conclusively diagnosed after death by brain autopsy. Scientists are investigating whether testing lymphatic tissue such as the tonsil may be an early tool in vCJD diagnosis. Additionally, recent studies have suggested that other blood tests may be useful as well.

Source: The Gale Group. Gale Encyclopedia of Medicine, 3rd ed.";

<div class="section1"> <p>CJD is diagnosed by a clinical neurological exam and electroencephalography (EEG), which shows characteristic spikes called triphasic sharp waves. Magnetic resonance imaging (MRI) or computed tomography scans (CT) should be done to exclude other forms of dementia, and in CJD typically shows atrophy or loss of brain tissue. Lumbar puncture, or spinal tap, may be done to rule out other causes of dementia (as cell count, chemical analysis, and other routine tests are normal in CJD) and to identify elevated levels of marker proteins known as 14-3-3. Another marker, neuron-specific enolase, may also be increased in CJD. CJD is conclusively diagnosed after death by brain autopsy. Scientists are investigating whether testing lymphatic tissue such as the tonsil may be an early tool in vCJD diagnosis. Additionally, recent studies have suggested that other blood tests may be useful as well. </p> </div><p><i>Source: The Gale Group. Gale Encyclopedia of Medicine, 3rd ed.</i>";

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