How Courts Have Dealt With Postpartum Psychosis Cases NYT > U.S. News Von: Shaila Dewan and Pam Belluck 03. September 2026 um 15:33 Defendants who claim to have had postpartum psychosis must meet a state’s definition of insanity to be found not guilty. The definitions of insanity vary. © Pool photo by Brett CoomerAndrea Yates, at center, was at first found guilty for killing her children, but later found not guilty by reason of insanity.