The intended purpose of the application document is to introduce dyslexia, a neurologically based learning disability. The article identifies the etiology, diagnosis, treatment, and prognosis of dyslexia as a learning disorder and provides a neurological basis for the disorder. Dyslexia is defined as a reading and writing disorder, unexplained by any deficits in motivation to learn, intelligence or sensitivity. Dyslexia is a disorder that has changes in certain parts of the brain and significant differences in DNA. With treatment and management dyslexia has the potential to be improved and allow the individual to function normally in reading and writing skills. Dyslexia is a learning disability characterized by many complicated factors and symptoms that can cause an individual's problems in their educational career. Dyslexia Have you ever made a mistake and said a word completely backwards? Or read your checkbook balance with the last number at the beginning? Imagine living every day, struggling to read what's in front of you. This is what happens to an individual with dyslexia. A dyslexic individual experiences problems with reading and writing, which include letters and numbers. Dyslexia is the impairment of learning to read and write and is one of the most common learning disabilities among children (Kolb & Whishaw, 2014). Dyslexia affects approximately ten percent of the population (Habib, 200). Therefore dyslexia is becoming more and more recognizable than in the past. Dyslexia was initially thought to be a vision problem, but when doctors began to notice that there was nothing wrong with children's vision, they began to look at the brain (Kolb & Whishaw, 2014). Doctors have begun examining the brains of dyslexic individuals in the Learning Disabilities Center. Retrieved from http://www.ncld.org/types-learning-disabilities/dyslexia/common-dyslexia-symptoms-warning-signs-in-children-pre-k-to-grade-2Habib, M. (2000) The Neurological bases of developmental dyslexia: an overview and working hypothesis. Brain, 123, 2373-2399 doi: http://dx.doi.org.proxy.cityu.edu/10.1093/brain/123.12.2373Kolb, B. & Whishaw, I.Q. (2014) An Introduction to brain and behavior (4 1st ed.) New York, NY: Worth Publishers Synder, R.D. & Mortimer, J. (1969). Diagnosis and Treatment: Dyslexia, Pediatrics, 44, 601-606 retrieved from http://web.a.ebscohost.com.proxy.cityu.edu/ehost/detail?sid=a4b271ab-da78-420c-b7c4-cca86502508e%40sessionmgr4001&vid =5&hid=4212&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=pbh&AN=6734500 Temporoparietal cortex (2014) American Tinnitus Association. Retrieved from http://www.ata.org/glossary