What you have to prove
Show one of: (A) disorganization of motor function in two extremities with extreme limitation despite prescribed treatment; OR (B) bulbar and neuromuscular dysfunction with difficulty with respiratory support, swallowing, or speaking.
Medical evidence SSA expects
Neurologist records, acetylcholine receptor antibody testing, EMG with repetitive stimulation, chest imaging (thymoma screen), and treatment history (pyridostigmine, immunosuppressants, IVIG, plasmapheresis).
Common misconceptions
Well-controlled MG on immunosuppression rarely qualifies. Refractory cases with repeated myasthenic crises requiring hospitalization typically meet the listing.
Didn't meet the listing? You can still qualify via a Medical-Vocational
Allowance — SSA's determination that your residual functional capacity, combined with
your age, education, and work history, leaves no jobs you can do. See our
appeals guide for what to do after an initial denial.