>>> WELCOME BACK, EVERYBODY. WE'RE TURNING TO A DIFFICULT STORY MAKING HEADLINES ACROSS THE COUNTRY. LINDSEY CLANCY, A 32-YEAR-OLD LABOR AND DELIVERY NURSE, IS BEING CHARGED WITH KILLING HER THREE CHILDREN, THE YOUNGEST, JUST 7 MONTHS OLD. >> THERE ARE SO MANY UNANSWERED QESTIONS, AND OBVIOUSLY, THIS IS HEART-WRENCHING THAT THIS HAPPENED, DR. JEN, BUT LET'S TALK ABOUT THE DIFFERENCE BETWEEN POSTPARTUM DEPRESSION AND POSTPARTUM PSYCHOSIS, BECAUSE THEY ARE COMPLETELY DIFFERENT. >> THEY ARE COMPLETELY DIFFERENT, AND WE HAVE TO START, YOU GUYS, BY SAYING, THIS IS THE MOST TRAGIC BUT THE MOST CLEAR EXAMPLE OF MENTAL ILLNESS IN POSTPARTUM PSYCHOSIS, SO LET'S GO THROUGH THE DIFFERENCE, BECAUSE THEY'RE NOT REALLY ON A SPECTRUM. THEY ARE NIGHT AND DAY. NUMBER ONE, POSTPARTUM DEPRESSION, WE'VE TALKED ABOUT IT, INCREDIBLY COMMON, THOUGHT TO AFFECT 10 TO 20% OF WOMEN GIVING BIRTH IN THIS COUNTRY. IT INCLUDES HIGHS AND LOWS, EMOTIONALLY, FATIGUE, A SENSE OF GUILT, ANXIETY, DIFFICULTY CARING FOR THAT WOMAN HERSELF OR THE BABY, AND AGAIN, VERY, VERY COMMON, ONE IN SEVEN, AND OFTENTIMES TREATED INITIALLY WITH MEDICATION BUT THEN SUPPORT THERAPY, TALK THERAPY. POSTPARTUM PSYCHOSIS, THE DEFINITION OF PSYCHOSIS, YOU GUYS, IS IMPAIRED REALITY TESTING, IMPAIRED JUDGMENT AND INSIGHT. THIS CAN INVOLV PSYCHOTIC SYMPTOMS LIKE DELUSIONS, AUDITORY OR VISUAL HALLUCINATIONS. WE THINK THAT THOSE WITH BIPOLAR DISORDER OR SCHIZOPHRENIA ARE AT HIGHER RISK, AND I WANT TO BE CRYSTAL CLEAR, THIS IS CONSIDERED A MEDICAL EMERGENCY. IF ANY WOMAN IS EXPERIENCING ANY OF THESE SYMPTOMS OR YOU THINK THAT YOU ARE NEAR A WOMAN WHO IS EXPERIENCING THOSE SYMPTOMS, SHE NEEDS TO BE BROUGHT TO AN EMERGENCY ROOM IN SOME CASES, AND SUPPORT AND SAFETY NEEDS TO BE PRIORITY NUMBER ONE, BOTH FOR THE BABY OR ANY OTHER CHILDREN AS WELL AS FOR THAT WOMAN. >> ARE THE SIGNS EASY TO MISS? >> YOU KNOW, FOR POSTPARTUM DEPRESSION, I'VE SEEN THAT IN MY 22 YEARS OF BEING A PRACTICING PHYSICIAN HUNDREDS AND HUNDREDS OF TIMES. TAT'S SOMEONE -- A WOMAN WHO'S TEARFUL, AND THAT'S NOT SUBTLE. WHEN YOU ARE WITH SOMEONE WHO IS PSYCHOTIC, THAT IS ABSOLUTELY NOT DIFFICULT TO MISS, YOU GUYS. IT IS OFTENTIMES FRIGHTENING FOR THE PERSON WHO'S OBSERVING IT. TRUST YOUR INSTINCTS. GET HELP. YOU DON'T -- THIS IS NOT SOMETHING YOU FIX OR SUPPORT ON YOUR OWN. >> BUT AS COMMON AS POSTPARTUM DEPRESSION IS, IT IS NOT A RISK FACTOR FOR PSYCHOSIS. >> NO, IT'S REALLY NOT. THEY'RE SEPARATE. POSTP POSTPARTUM PSYCHOSIS, MUCH MORE RARE, BUT IT STARTS ACUTELY IN DAYS AND WEEKS FOLLOWING DELIVERY. POSTPARTUM DEPRESSION STARTS MUCH LATER, USUALLY. WE'RE TALKING WEEKS, MONTHS, OR EVEN LATER IN THAT FIRST POSTPARTUM. >> IF YOU SPOT IT, GET HELP RIGHT AWAY. >> 100%. THIS IS MENTAL ILLNESS 101 AND IT IS A TRAGIC STORY. >> IF YOU DON'T FEEL COMFORTABLE CALLING YOUR DOCTOR OR TELLING SOMEONE YOU LOVE, IF YOU OR SOMEONE YOU KNOW IS STRUGGLING WITH THOUGHTS OF SUICIDE, THERE'S FREE, CONFIDENTIAL HELP. ALL YOU HAVE TO DO IS CALL OR NEXT THE NATIONAL LIFELINE. THAT NUMBER IS