What you have to prove
Medical documentation of the disorder with at least three required symptoms, AND marked limitation of two (or extreme of one) of the four Paragraph B areas, OR serious-and-persistent with marginal adjustment for 2+ years.
Medical evidence SSA expects
Records from a psychiatrist, psychologist, or LCSW; medication history; therapy notes; panic-attack logs; and statements documenting real-world functional impact (e.g. inability to leave the house, obsessive routines consuming hours daily).
Common misconceptions
Treated anxiety with manageable symptoms rarely qualifies. OCD cases where rituals genuinely prevent work — multiple hours per day — often do qualify.