Learning Disabilities (LD) are generally disabilities in which individuals with average or above average intelligence are affected. The ability to learn is affected and this may be true for one's lifetime. Some children may have single learning disability or some may have many overlapping learning disabilities. Learning disability may include disabilities in various areas related to reading, language and mathematics. With the right help at right time, right assessment and remediation, children with LD can and do learn successfully and become winners in the society later. It is a great challenge to identify and diagnose and assist children with learning disability. Based on these facts, it is suggested that the early diagnosis of learning disability in children is essentially important to identify and suggest remedial solutions to the parents. Many times the student himself is not aware that a particular symptom of LD is applicable to him. Sometimes the students are reluctant or hesitant to accept that they possess one or more symptoms of LD. Many researchers have contributed to the detection of these learning Disabilities. This paper provides a survey of the various research work done with this focus. Once the disability is diagnosed the student will be able to learn according to his/her learning requirements/preferences that may lead to positive performance of the LD learner.