Keyword Analysis & Research: disease rare


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What are some really rare diseases?

A growing number of doctors believe Morgellons to be a chronic infectious disease and not something that results from contact with aliens, as some fringe websites suggest. Fields' disease. This is considered the rarest known disease in the world, with only two cases diagnosed.

What is considered a rare disease?

What is a rare disease? A rare disease is generally considered to be a disease that affects fewer than 200,000 people in the United States at any given time. Rare diseases are also sometimes called orphan diseases. How many rare diseases are there? There are more than 6,800 rare diseases.

What makes a disease rare?

A rare disease, also referred to as an orphan disease, is any disease that affects a small percentage of the population. Most rare diseases are genetic, and are present throughout a person's entire life, even if symptoms do not immediately appear. In Europe a disease or disorder is defined as rare when it affects less than 1 in 2000 citizens.


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