1. This article says the NY Daily News says his uncle says so:
"Adam Lanza's mother had been increasingly concerned over her son's well-being in the weeks before the tragedy, telling a friend just a week before that he was "getting worse" and that "she was losing him," the New York Daily News reported. That report makes no mention of Asperger's syndrome, but it cites Adam's uncle who said he was taking an anti-psychotic drug called Fanapt. The Atlantic points out that several diagnoses have been bandied about in the press, including autism, Asperger's, and "personality disorder.""