Many people who have a child under the age of 18 that has been diagnosed with ADHD have wondered whether the child could be approved for Social Security disability. Since SSD is based on work history, a child could only be granted a monthly Supplemental Security Income, or SSI check. The ADHD must definitely be medically documented in order to even be considered as the basis for a disability case. The three main characteristics of this affliction are hyperactivity, inattention, and impulsiveness. All three of these characteristics must be distinctly obvious, and duly noted as such by a qualified physician. A child under the age of 18 may also be able to win an SSI case by having one or more conditions that are a result of having Attention Deficit Hyperactive Disorder, or ADHD. A disability examiner will review all medical records that are submitted in hopes of being approved for SSI. It is almost a sure thing that the child will need to undergo an assessment by a Social Security appointed psychologist before a final decision on the disability case is made.