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Huntington's Disease (Huntington's Chorea)

by Carlo Raj, MD
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    Here, we’ll quickly take a look at a condition known as Huntington’s disease. Now, this is a disease in which in genetics, trinucleotide expansion is a big deal. It’s an inherited autosomal dominant disease. With Huntington, the particular gene is called huntingtin. The -ton becomes a -tin or should I say the -ton is affected by the -tin. By that, we mean Huntington and huntingtin is the protein. When do you find this? Well, perhaps, fourth or fifth decade, but it all depends, right? And by that I mean a father – well, not my father, but in general – Well, actually, we don’t know. My father died of very interesting causes. And he did have movement disorder and there was no doctor that we were able to find in the United States that was able to properly diagnose him. But the point being is if by chance he did have Huntington, and he then acquired it let’s say in the fifth or even the sixth decade, when we say anticipation, there’s every possibility that I am going to then develop it at a younger age. Ever so often, I wonder if you’ve noticed, but I do actually watch my hands until you see as to whether or not I have tremors. I know there’s something genetic going on, it’s interesting. Know thyself and know family history so that you can do the best that you can in terms of prevention. With Huntington, there might be choreiform type of movement. This chorea of course means what? It’s involuntary jerking movement that’s taking place in a flow-like manner from one body part to another. “I am flowing.” You see this? This is choreiform type of movement. Personality and behavioral changes are something that you would find initially in your patient. I...

    About the Lecture

    The lecture Huntington's Disease (Huntington's Chorea) by Carlo Raj, MD is from the course Movement Disorders.


    Included Quiz Questions

    1. Parkinson's disease and dementia.
    2. Multiple Sclerosis.
    3. Multiple System Atrophy.
    4. Supranuclear Palsy
    5. Alzheimer's Disease.
    1. CAG trinucleotide repeats on chromosome 4.
    2. CTG trinucleotide repeats on chromosome 4.
    3. CAG trinucleotide repeats on chromosome 3.
    4. CTG trinucleotide repeats on chromosome 3.
    5. CAG trinucleotide repeats on chromosome 5.
    1. Cerebellar degeneration.
    2. Atrophy of caudate nucleus.
    3. Atrophy of putamen nucleus.
    4. "Box-Car" ventricles on coronal MRI.
    5. Loss of striatal neurons.
    1. I am sorry there is no cure for this disease. However, we have dopamine antagonists to fix the movement problem.
    2. I am sorry there is no cure for this disease. However, we have drugs to treat your memory problems.
    3. I am sorry there is no cure for this disease. However, we have drugs with great efficiency to treat your mood and pyschological issues.
    4. We have a cure for this disease.
    5. There is nothing I can do to help with your symptoms.

    Author of lecture Huntington's Disease (Huntington's Chorea)

     Carlo Raj, MD

    Carlo Raj, MD


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