SSDI

Social Security Disability

There are three different ways children can collect Social Security or SSI disability benefits. All of the benefits discussed here are cash benefits paid to disabled children or to the children of disabled or retired workers.

Low-income disabled children. Disabled children whose families have low income can collect Supplemental Security Income (SSI) until they are 18, at which point they might be eligible to start collecting adult SSI benefits. Children who are approved for SSI disability can also receive Medicaid.

Children who don't qualify for SSI. Children who are younger than 18 (or 19 if a full-time student) and have a parent who is currently receiving Social Security Disability Income (SSDI) or Social Security retirement benefits (or who had earned enough Social Security credits to earn one of these benefits before dying) may be able to collect dependents benefits based on their parents’ records, whether they are disabled or not.

Adults disabled since childhood. Disabled children who are older than 18 but who became disabled before they turn 22 can collect disability benefits if they have a parent collecting Social Security Disability Income (SSDI) or Social Security retirement income (or a deceased parent who was entitled to one of these benefits before their death).

http://www.nolo.com/legal-encyclopedia/how-can-child-qualify-social-security-disability.html

http://www.ultimatedisabilityguide.com/qualify_disability_benefits.html