Dyslexia is a language-based learning disability that causes difficulties with specific language skills like reading and is characterized by problems identifying speech sounds and learning letter-sound correspondences. It is not due to lack of intelligence. The effects of dyslexia vary by severity but include issues with word recognition, reading fluency, spelling, and writing. Signs include problems learning letters and sounds and difficulties with reading quickly, spelling, and math. Dyslexia is treated through specialized multisensory instruction tailored to individual needs. People with dyslexia have legal rights under disability laws to accommodations to help overcome learning problems.