I am on SSI..for autism spectrum disorder/developmental disorder NOS depending on if you look at my evaluation by the neurologist or what they have on record at the mental health center i go for, for therapy and prescriptions. Then I have Generalized Anxiety, PTSD, reoccurring major depression, features of avoident P.D...and am on SSI. It is more difficult to get SSI for mental issues than physical disabilities but possible...though its likely you'll get denied, in which case I think its best to appeal and get a disability lawyer(they just get a percent out of your inital back pay or whatever and might have to pay like 75$ for the work they do digging up all your records to win you the case. If you don't get the disability than you don't owe them anything.

But yeah that difficult part with me is I am not incapable of any task that can be applied to a job...I just have difficulties with consistency, hard for me to keep up with the expected pace of things like it can take me longer to do a lot of things but am still effective once I do accomplish the task. Its hard to stay focused and I get overwhelmed with stress very easily to the point I can't function and I start getting frustrated and can lash out, which isn't good for working with people. I have sensory issues due to the autism spectrum thing so certain frequencies of noise, or constant noise like say cash registers going of and such aggravate me and the PTSD does not help either, with that sudden loud noise, movement or the sound of little kids screaming sets off anxiety and I sort of freeze up or at least get really clumsy and its hard to focus on anything. I might end up taking excessive bathroom breaks not because I need to use the bathroom but so I can hide in the very last stall in the corner for a while to try and calm myself because I feel on the verge of going mental. So a little hard to explain that on the sheets they send you to fill out about how your condition effects your ability to work. Not to mention if I am overwhelmed by noise, or just too many people on a busy day I can also miss verbal instructions and forget simple yet important steps to certain tasks.

Anyways for more practical stuff you do need a proper diagnoses of a disorder that qualifies for SSI, it does help however if you have multiple conditions, but without a diagnoses its next to impossible. I've had a diagnoses since I was 15 of anxiety and depression as I attempted suicide and it was difficult getting a diagnoses of PTSD...and I ended up having to go the the hospital for sucidal thoughts a couple times before and after I applied it was so bad I was neglecting to eat even close to enough so I was pretty underweight and unhealthy because of that to...so they had me drink this gross nutrient shake thing to get me back to a healthier weight. So those instances sort of helped prove my case.