In order to establish disability for an applicant for Social Security disability income, the Social Security Administration has certain evidentiary requirements in place. The applicant is responsible for providing the necessary medical evidence to verify their disability and its severity.

In general, the information will come from sources that have evaluated or treated the applicant for his or her impairment. These include licensed professionals in the areas of: medicine and osteopathy; psychology; optometry; podiatry; and speech-language pathology.

Evidence from treating sources is the most commonly used method at present, and regulations hold this type of evidence in special esteem since treating sources are more likely to have the ability to provide a detailed picture of the applicant's disability. Because of this, providing timely, accurate, and adequate medical reports from treating sources can speed of the application process as it reduces the need for additional information.

Information from other sources may be provided in order to help demonstrate further details about the disability.

The evidence itself can and should touch on the symptoms of the disability. These include information touching on daily activities; the location, duration, frequency and intensity of the disability; aggravating factors; details about any medication used; treatments other than medication, and other remedial measures used to manage the condition.

As can be imagined, it takes a lot to put together a thorough Social Security disability income application that has the best chance of being accepted. Having an advocate and guide along the way can make a difference, especially if an appeal becomes necessary later on.

Source: Online: http://www.ssa.gov/disability/professionals/bluebook/evidentiary.htm; Social Security Administration website; gives overview of evidentiary requirements for establishing disability.