По мои наблюдения такава се появява основно след трудно и болезнено раждане.
Не съществува такава връзка.
Следродилната депресия не зависи от типа раждане, казва Гугъл:
What they did: The researchers asked more than 10,000 British women who had given birth eight weeks before to fill out a questionnaire describing their mood. All of the women had had one baby, by planned cesarean section, unplanned C-section, assisted vaginal delivery, or unassisted vaginal delivery.
What they found: The researchers found no significant relationship between the type of delivery and the incidence of postpartum depression, even in women with a previous history or risk of depression. The researchers had thought that the trauma of an emergency cesarean might put a woman at higher risk for depression, but that was not the case. Prior research also had raised the possibility that a planned cesarean, because it eliminates uncertainty and the fear and discomfort of labor, might protect women from postpartum depression. This study did not find that to be true, either.
повече тук: http://www.usnews.com/usnews/health/briefs/pregnancy_infertility/hb050228a.htm
Тук прочетете за разликата между baby-blus и следродилната депресия (Postpatum depression - PPD). Разлики, признаци, съвети за преодоляване (на английски, ако има желаещи - да преведат за масите, ще е интересно четиво!).