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Huntington disease; Huntington//'s chorea; Huntington//'s disease; Progressive Chorea, Chronic Hereditary (Huntington) 

Als; Amyotrophic Lateral Sclerosis (ALS); Amyotrophic lateral sclerosis, type 2; Amyotrophic lateral sclerosis, type 4; ... 

Huntington's disease (HD) results from genetically programmed degeneration of brain cells, called neurons, in certain areas of the brain. This degeneration causes uncontrolled movements, loss of intellectual faculties, and emotional disturbance. HD is a familial disease, passed from parent to child through a mutation in the normal gene. Each child of an HD parent has a 50-50 chance of inheriting the HD gene. If a child does not inherit the HD gene, he or she will not develop the disease and cann...

Amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease, is a progressive, fatal neurological disease affecting as many as 20,000 Americans with 5,000 new cases occurring in the United States each year. The disorder belongs to a class of disorders known as motor neuron diseases. ALS occurs when specific nerve cells in the brain and spinal cord that control voluntary movement gradually degenerate. The loss of these motor neurons causes the muscles under their control to weaken and w...


Huntington's Disease as related to Amyotrophic Lateral Sclerosis