Dyslexia, according to most experts, is
a reading disability resulting from a defect in the ability to process
graphic symbols. It is not a disease, but a lifelong disability
also known as developmental reading disorder (DRD), it is caused by a
defect of higher cortical (brain) processing of symbols.
Dyslexia is one of the most common learning disabilities, showing up
as difficulty with language. Children with dyslexia can have
trouble understanding words, sentences or paragraphs and they can also
have trouble with oral or written language. The cause of
dyslexia is unknown but somehow it runs in families. It affects
both sexes, boys and girls. It also affects children equally
across socioeconomic and ethnic backgrounds.
When parents become aware that their
child is not performing adequately in school, they often wonder if a
"learning disability" is the reason. Almost unheard of as a
technical phrase earlier in this century, learning disabilities are
frequently identified today as the cause of poor school performance;
estimates of the number of children affected vary from five to as much
as thirty percent of the school-age population.