PICS occurs after lengthy ICU stays

Dear Doctors: Our dad had Legionnaires' disease 16 years ago. He was on a ventilator for a month, and after that, he was always frail. We figured it was from being so sick, but I just read about something called ICU syndrome. It sounds like what happened to our dad. Can you explain what that is?

Dear Reader: The condition you're asking about is known as postintensive care syndrome, or PICS. It refe…