Definition of Postpartum depression:

Postpartum depression is moderate to severe depression in a woman after she has given birth. It may occur soon after delivery or up to a year later. Most of the time, it occurs within the first 3 months after delivery.

Causes, incidence, and risk factors:

Women commonly have mood changes during pregnancy, especially after delivery. These mood changes may be caused by changes in hormone levels. Many non-hormonal factors may also affect mood during this period:

• Changes in your body from pregnancy and delivery
• Changes in work and social relationships
• Having less time and freedom for yourself
• Lack of sleep
• Worries about your ability as a mother

Feelings of anxiety, irritation, tearfulness, and restlessness are common in the week or two after pregnancy. These feelings are often called the postpartum or "baby blues." These symptoms almost always go away soon, without the need for treatment.

Postpartum depression may occur when the baby blues do not fade away or when signs of depression start 1 or more months after childbirth.

You may have a higher chance of postpartum depression if you:

• Are under age 20
• Currently abuse alcohol, take illegal substances, or smoke (these also cause serious medical health risks for the baby)
• Did not plan the pregnancy, or had mixed feelings about the pregnancy
• Had depression, bipolar disorder (for example, manic depression), or an anxiety disorder before your pregnancy, or with a previous pregnancy
• Had a stressful event during the pregnancy or delivery, including personal illness, death or illness of a loved one, a difficult or emergency delivery, premature delivery, or illness or birth defect in the baby
• Have a close family member who has had depression or anxiety
• Have a poor relationship with your significant other or are single
• Have financial problems (low income, inadequate housing)
• Have little support from family, friends, or your significant other