To qualify for disability benefits through the Social Security Administration (SSA), an individual must prove they are unable to perform substantial gainful activity (SGA) on a regular and continuing basis due to a medically determinable impairment(s). The medical criteria changes for different age categories. For children under the age of 18, an individual must prove they have a physical or medical condition(s) that “very seriously” limits his or her activities. For individuals between the age of 18-49, they must prove they are unable to perform any job that exists in significant numbers in the national economy. This often is viewed as the most difficult standard of disability. For individuals over 50, 55, and 60, the determination of disability depends on a variety of factors including medical limitations, age, education, and work history. It is important to consult with an experienced attorney to determine your potential eligibility for benefits.