Is major depression an ssi disability?

Sometimes: Severe and chronic depression will sometimes qualify a person to receive ssi. It depends on the severity and response to appropriate treatment, along with clear evidence of impairment of daily functioning.

Depends on the law: What is and what isn't a SSI disability is less about medicine and more about the law. Contact an attorney for this answer.

Very very rarely: Can't say it is not possible but depression does get better. This means going back to normal is highly likely, especially with treatment.

Extremely difficult: You must prove you are severely disabled and can not work at all with support. You get an evaluation by an SSI physician. After evaluation, you be ordered into treatment and fail every kind, including medications, psychotherapy, possibly electroshock therapy. Being on SSI can decrease quality of life because of financial crisis, poor self-esteem, social isolation. Maybe better alternatives exist.