Serotonin induced craze?

We've studied and discussed a lot about serotonin levels and behavior. There are some people that have committed serious crimes while experiencing PMS (Pre-Menstrual Syndrome). Check your anatomy book to see a graph of serotonin levels just before and during menstruation (they are the lowest at these times each month for women). A temporary insanity defense has been used in court cases for these women. How do you feel about this?