No family, friend or partner wants to think about the possibility of their loved one suffering from postpartum psychosis. And, the truth is, it’s rare, affecting 1-2 women out of 1000. Perhaps the most famous case of postpartum psychosis is that of Andrea Yates, a mother of 5, who drowned each of her children in the family bathtub. They ranged in ages from 7 years old to 6 months.