Huntington+Disease

__**Early Symptoms**__: __**Later Symptoms:**__ __**Daignosis:**__ __**Causes:**__ Watch the video which shows the causes and effects: http://www.ygyh.org/hd/cause.htm --**Inheritance**-- --**Incidence**-- --**Treatment**--
 * Mood swings
 * Irritability
 * Depression
 * Loss of memory
 * Uncontrolled movements
 * Walking and speech becomes difficult
 * Memory and speech continue to decline and may eventually disappear
 * If a parent has the disorder you should go to the hospital and get screened to so if you too have a disease gene
 * If you see mental or physical changes occurring you should get screened.
 * The screening is a DNA test that shows whether you have the larger Huntingtin gene
 * Occurs in people who have inherited a larger than normal Huntingtin gene (found on chromosome 4).
 * see inheritance below
 * __What does it do?__**
 * The gene produces an abnormal protein that kills brain cells in middle-aged people.
 * The loss of these cells due to the abnormal protein causes multiple symptoms and eventually death.
 * The Gene is a dominant gene so only needs to inherit one copy of the disease gene to get the disease.
 * A child of someone who has Huntington Disease has a 50% chance of inheriting the disease
 * Only can be inherited from parent to child (genetic inheritance)
 * It is commonly found in people of Western Europe descent in which 1 in 20,000 people have the gene that causes Huntington Disease. Less common areas of this disease are Asia and Africa in which 1 in a million have the gene.
 * No treatment is available to cure Huntington disease.
 * There are drugs to help control problems with movement and can also help with emotional/mental problems such as depression resulting from this disease.

Source:
 * http://www.ygyh.org/
 * http://www.ninds.nih.gov/disorders/huntington/huntington.htm