Dyslexia is a language-based learning disorder that falls under the category of Developmental Disorders (if one’s perspective is psychological) or a learning disability (if ones’ perspective is educational). Dyslexia is characterized by difficulties on the part of the individual with specific language skills: chiefly reading, but it can also involve spelling, pronunciation, and writing. It is seen, for the most part, as a reading disorder. Developmental dyslexia is the genetic form while acquired dyslexia is the form resulting from brain injury (e.g., TBI or stroke). There are likely to be multiple deficits in the case of a dyslexic individual that need to be evaluated separately.
Treatment, the majority of which is instruction, should be carried out by professionals in special education or educational psychology who have been specially trained in communication disorders.