Some of the symptoms of postpartum depression are the same as those for generalized depression, such as sadness, a sense of worthlessness and a loss of interest in sex or hobbies.

CNN: New dads can get postpartum depression, too

Yates had pleaded not guilty by reason of insanity, and her lawyers argued that severe psychosis brought on by postpartum depression following the birth of her youngest child, Mary, led her to commit the killings.

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After two to three weeks, clinicians usually consider the mother's experience as postpartum depression.

CNN: Postpartum depression: When moms feel out of control

Male postpartum depression is different from the "daddy blues, " he said.

CNN: New dads can get postpartum depression, too

During an interview with host Matt Lauer, Cruise criticized the actress Brooke Shields for having taken antidepressant drugs to combat postpartum depression.

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One recent study found that almost 13% of the women sampled experienced general postpartum anxiety, as opposed to postpartum depression, of which 17% suffered.

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In retrospect, Loo believes she experienced postpartum depression with each of her three children, but the most intense feelings of losing control came with her youngest.

CNN: Postpartum depression: When moms feel out of control