my son has aspergers syndrome, now considered autism. he is 28, lives, and supported completely by me. we documents from medical doc's to verify. Is he disabled?

[Bsch4477]

If your doctor wrote that he is not capable of working then he is disabled. 

[ThomasM125]

Per the IRS Instructions to Schedule R, to be considered disabled, you have to not be able to engage in substantial gainful activity because of a physical or mental condition and you need a physician to determine that the condition has lasted or can be expected to last continuously for at least a year or can result in death: