How may Huntington disease be said to a common disorder?

Huntington disease cannot be said to a common disorder. In fact, it is a relatively rare inherited neurodegenerative disorder.

The prevalence of Huntington disease varies around the world, but it is estimated to affect about 1 in 10,000 people in the United States and Europe. This means that there are about 30,000 people with Huntington disease in the United States and about 150,000 people worldwide.

Huntington disease is more common in certain populations, such as people of European descent. It is also more common in certain geographic regions, such as the Lake Maracaibo region of Venezuela and the Saguenay-Lac-Saint-Jean region of Quebec, Canada.