I was approved for ssdi under my parents as a child in US under age 22. However, sadly if you marry you can not claim ssdi again only ssi unless you have work credits. This is what I was told. I am not sure how it works in other areas of the world.
The whole process in US is for one word "tiresome". I mean you have to have a stack of DX from a handful and even then you may get a rejection letter. Plus, it has to totally effect your ability to have gainful employment.
I have agoraphobia, (ie housebound at times, not leaving for weeks). My attacks were so severe at one point I had my therapist come to my home for appointments and this is almost unheard of in most cases. I also had an adverse reaction to a medication and the nurse came to see me as well. I guess being a prisoner in your own home is quite "disabled" not being able to even buy your own food or walk to the mailbox without almost passing out.
Well, that is my story and yes. I was approved it took a few years and getting a lawyer. I chose to marry and now can not get ssi because my partner makes enough income for the family. But, heath insurance is a huge problem for us.
Good luck!
