You will need to complete an Application for Supplemental Security Income (SSI) AND a Child Disability Report. The key to successfully applying for disability is providing all of the records you have up front. It will speed up the process. Applications usually take 4-6 months to process. If approved they will provide back payment from application processing date. If denied there is an appeals process that you can go through for additional consideration.
MEDICAL AND SCHOOL WORKSHEET
YOU MUST FILL OUT THE ONLINE CHILD DISABILITY FORM