Once released from prison for his health, Capone was transferred to Johns Hopkins Hospital to undergo treatment for Paresis as a result of initially being sick with Syphilis. Hopkins refused to treat him due to his misconduct, but he was admitted to Union Memorial Hospital.
At this point, his brain condition couldn’t be recovered. He was one of the first Americans to be treated with Penicillin, which slowed down the harm of the disease. Nevertheless, it wasn’t going to save him as the damage was too big.