Hi!
I'm assuming you mean SSDI in the United States. If that's the case, you really need to talk to an attorney or a government official to address that issue, but here's a link that describes the kinds of information they ask for when deciding whether someone qualifies for disability payments:
www.ssa.gov/pubs/10029.html.
Also, sometimes counselors and psychiatrists are familiar with state disability requirements. You might try asking the person who will be qualifying you as having a long-term disability (12 months or longer).
Hope that helps!
frances