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By Mayo Clinic staffLeft untreated, postpartum depression can interfere with mother-child bonding and cause family distress. Children of mothers who have untreated postpartum depression are more likely to have behavioral problems, such as sleeping and eating difficulties, temper tantrums and hyperactivity. Delays in language development are common as well.
Untreated postpartum depression can last up to a year or longer. Sometimes untreated postpartum depression becomes a chronic depressive disorder. Even when treated, postpartum depression increases a woman's risk of future episodes of major depression.