Preview of Understanding Huntington's Disease:
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Understanding Huntington's Disease

Diagnosis of Huntington's Disease

Today, a blood test is available to diagnose a person displaying suspected Huntington's symptoms. The test analyzes DNA in the blood sample and counts the number of times the genetic code for the mutated Huntington's gene is repeated. Individuals with Huntington's Disease usually have 40 or more such "repeats;" those without it, 28 or fewer. If the number of repeats falls somewhere in between then more extensive neurological and diagnostic testing are called for. Tests of the patients hearing, eye movements, strength, feeling, reflexes, balance, movement and mental condition will follow. The patient may also be asked about any recent intellectual or emotional problems.

A computed tomography scan, positron emission tomography or magnetic resonance imaging techniques can also be prescribed. This is a painless diagnostic procedure that produces computer generated images of the brain's internal structures. Huntington's patients often show shrinkage in two particular areas of the brain, the caudate nucleus and... [to view the full essay now, purchase below]

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