Dyslexia is a learning disability characterized by problems in reading, spelling, writing, speaking or listening. In many cases, dyslexia appears to be inherited.

The word "dyslexia" is derived from the Greek word, "dys" (meaning poor or inadequate) and the word "lexis" (meaning words or language).

Dyslexia is not a disease, but describes rather a different kind of mind that learns in a different way from other people. Many people with the condition are gifted and very productive; dyslexia is not at all linked to low intelligence. In fact, intelligence has nothing to do with dyslexia.

The National Institutes of Health estimates that about 15% of the U.S. population is affected by learning disabilities, mostly with problems in language and reading. The condition appears in all ages, races and income levels.

The underlying cause of dyslexia is not known, although research suggests the condition is often inherited. New research...