The South Carolina Department of Disabilities and Special Needs (SCDDSN) is the state agency that provides services to children and adults with severe lifelong disabilities. The mission of SCDDSN is to assist people with disabilities and their families through choice in meeting needs, pursuing possibilities and achieving life goals; and minimize the occurrence and reduce the severity of disabilities through prevention.

The criteria designated in the South Carolina Code of Laws indicate seven (7) categories of eligibility for services from SCDDSN. Those categories are:
To be eligible for SCDDSN services you must be a resident of South Carolina and be confirmed by SCDDSN to meet criteria for at least one of the disability categories noted above.