PMDD has long been considered a severe form of PMS but differs because it causes serious mood and emotional problems and is a chronic, lifelong condition.
In a population-based study using Manitoba prescription dispensing records, my colleagues and I found that approximately 60% of individuals took at least one prescription medication postpartum.
The babies were conceived naturally and came from one fertilized egg that split into four. Overall, experts say, the chance of conceiving quadruplets naturally is only 1 in 700,000.