A general term for disorders that involve difficulty in learning to read or interpret words, letters, and other symbols, but that do not affect general intelligence. The difficulties are involuntary and people with this disorder have normal desire to learn.
Symptoms: Delayed onset of speech, difficulty distinguishing left from right, difficulty with direction, as well as being easily distracted by background noise. Dyslexics are commonly poor spellers, a feature sometimes called dysorthographia or dysgraphia, which depends on orthographic coding.
Diagnosis and Treament: It is diagnosed by central dyslexias, surface dyslexias, phonological dyslexias,deep dyslexias, peripheral dyslexias. Treatment for dyslexia consists of using educational tools to enhance the ability to read. Medicines and counseling usually aren't used to treat dyslexia. An important part of treatment is educating yourself about the condition.
Statistics: Approximately 15% of people have dyslexia. This equates to over 30 million adults in the United States, about 6 million in the United Kingdom and 3 million in Canada. Most don't know they are dyslexic. Somewhere between 25-40% of children with dyslexia also have ADHD and conversely, approximately 25% of children with ADHD also have dyslexia.