Many Social Security Disability (SSD) claims revolve around physical injuries. You may have a brain injury or a spinal cord injury that makes it impossible for you to work, for instance. However, though these cases are common, it's important not to assume that only physical injuries qualify. You may also qualify if you have a mental disorder that you're dealing with, which can certainly keep you out of the workforce just like a physical injury or disability.
Supplemental Security Income (SSI) is a program that is in place across the country with the intent to help those in financial need. SSI is available for those with very limited assets and resources.