Postpartum depression

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}} After giving birth, about 70-80% of womenexperience an episode of baby blues, feelings of depression, anger, anxietyand guiltlasting for several days. About 10% of new mothersdevelop the more severe postpartum depression (also postnatal depression), a form of major depressionfor which treatment is widely recommended.

Baby Bluesis also the title of a comic stripby Rick Kirkmanand Jerry Scott.

Diagnosis

The diagnostic criteria for postpartum depression (PPD) are the same as that for major depression, except that to distinguish PPD from the baby (maternity) blues, the symptoms must be present for more than two weeks. Depression can also occur during pregnancy (ante-natal depression).

There are other types of postpartum distress that do not involve depression. For example, the mother may present with post-partum anxiety and post-partum OCD(including pure-O OCD). Symptoms of post-partum OCD include recurring intrusive thoughts, obsessive thoughts, avoidance behaviour, fears, anxiety, and depression.

Causes

While not all causes of PPD are known, several factors have been identified. Beck (2001) has conducted a meta-analysisof predictors of PPD. She found that the following 13 factors were significant predictors of PPD (effect sizein parentheses -- larger values indicate larger effects):

• Prenatal depression, i.e., during pregnancy (.44 to .46)
• Low self esteem (.45 to.47)
• Childcare stress (.45 to .46)
• Prenatal anxiety (.41 to .45)
• Life stress (.38 to .40)
• Low social support (.36 to .41)
• Poor marital relationship (.38 to .39)
• History of previous depression (.38 to.39)
• Infant temperament problems/colic (.33 to .34)
• Maternity blues (.25 to .31)
• Single parent (.21 to .35)
• Low socioeconomic status (.19 to .22)
• Unplanned/unwanted pregnancy (.14 to .17)

These factors are known to correlatewith PPD. That means that, e.g., high levels of prenatal depression are associated with high levels of postpartum depression, and low levels of prenatal depression are associated with low levels of postpartum depression. But this does not mean the prenatal depression causes postpartum depression -- they might both be caused by some third factor. In constrast, some factors, like lack of social support, almost certainly cause postpartum depression. (The causal role of lack of social support in PPD is strongly suggested by, e.g., O'Hara 1985, Field et al. 1985; and Gotlib et al. 1991.)

Although profound hormonalchanges after childbirth are often claimed to cause PPD, there is little evidence that variation in pregnancy hormone levels is correlated with variation in PPD levels: Studies that have examined pregnancy hormone levels and PPD have usually failed to find a relationship (see, e.g., Harris 1994; O'Hara 1995). Further, fathers, who are not undergoing profound hormonal changes, suffer PPD at relatively high rates. Finally, all mothers experience these hormonal changes, yet only about 10-15% suffer PPD. This does not mean, however, that hormones do not play a role in PPD. Block et al (2000), for example, found that, in women with a history of PPD , a hormone treatment simulating pregnancy and parturition caused these women to suffer mood symptoms. The same treatment, however, did not cause mood symptoms in women with no history of PPD. One interpretation of these results is that there is a subgroup of women who are vulnerable to hormone changes during pregnancy. Another interpretation is that simulating a pregnancy will trigger PPD in women who are vulnerable to PPD for any of the reasons indicated by Beck's meta-analysis (summarized above).

Profound lifestylechanges brought about by caring for the infantare also frequently claimed to cause PPD, but, again, there is little evidence for this hypothesis. Mothers who have had several previous children without suffering PPD can nonetheless suffer it with their latest child. Plus, most women experience profound lifestyle changes with their first pregnancy, yet most do not suffer PPD.

In severe cases, postpartum psychosis (also known as puerperal psychosis) can develop, characterized by hallucinationsand delusions. This happens in about 0.1 - 0.2% of all women after having given birth. In some cases, postpartum psychosis can develop independent of postpartum depression.

Sometimes a preexisting mental illnesscan be brought to the forefront through a postpartum depression.

An evolutionary psychological hypothesis for postpartum depression

Summary: Mothers with inadequate social support, an unhealthy child, a lack of resources (e.g., financial problems in contemporary societies), or other costly and stressful circumstances, have negative reactions towards the baby because these mothers would not have been able to successfully raise the child in ancestral-type conditions.

Evolutionary approaches to parental care (e.g., Trivers1972) suggest that parents (human and non-human) will not automatically invest in all offspring, and will reduce or eliminate investment in their offspring when the costs outweigh the benefits. Reduced care, abandonment, and killing of offspring have been documented in a wide range of species. In many bird species, for example, both pre- and post-hatching abandonment of broods is common (e.g., Ackerman et al. 2003; Cezilly 1993; Gendron and Clark 2000).

Human infants require an extraordinary degree of parental care. Lack of support from fathers and/or other family member will increase the costs borne by mothers, whereas infant health problems will reduce the evolutionary benefits to be gained. If ancestral mothers did not receive enough support from fathers or other family members, they may not have been able to "afford" raising the new infant without harming any existing children, or damaging their own health (nursing depletes mothers' nutritional stores, placing the health of poorly nourished women in jeopardy).

For mothers suffering inadequate social support or other costly and stressful circumstances, negative emotions directed towards a new infant could serve an important evolved function by causing the mother to reduce her investment in the infant, thereby reducing her costs.

Numerous studies support the correlation between postpartum depression and lack of social support or other childcare stressors. Mothers with postpartum depression also reduce their investment in their new offspring. They commonly have thoughts of harming their children, exhibit fewer positive emotions and more negative emotions toward them, are less responsive and less sensitive to infant cues, less emotionally available, have a less successful maternal role attainment, and have infants that are less securely attached (Beck 1995, 1996b; Cohn et al. 1990, 1991; Field et al. 1985; Fowles 1996; Hoffman and Drotar 1991; Jennings et al. 1999; Murray 1991; Murray and Cooper 1996). In other words, most mothers with PPD are suffering some kind of cost, like inadequate social support, and consequently are mothering less. PPD may be an adaptation that, via negative emotions, informs mothers that they cannot "afford" the new baby and that motivates them to reduce or eliminate investment in offspring. It may also help them negotiate greater levels of investment from others.

If this view is correct (and it is far from proven), mothers with PPD do not have a mental illness, they need more social support, more resources, etc. Treatment for PPD should therefore focus on helping mothers get what they need. For more on this hypothesis, see Hagen 1999and Hagen and Barrett, n.d..

Effects on the Parent-Infant Relationship

Post-partum depression may lead mothers to be inconsistent with childcare. They may not respond quickly or positively or at all to the infant's cues. This can affect development of a secure attachment. If a mother (or other caregiver) does not respond consistently in a warm, caring way -- holding, rocking, cooing, stroking, or talking softly -- the baby may have trouble feeling safe, secure and trusting. An insecure infant may have trouble interacting with the caregiver -- rejecting them or becoming upset when with them. The infant may be withdrawn, passive or have trouble reaching milestones on target.

Older children may also develop attachment issues. They may be less independent and less likely to interact with other people. They may have discipline, behaviour and aggression issues. Some children have a higher risk of mental health issues, such as anxiety and depression.

Post-partum psychosis

Some women with post-partum depression develop psychosis. Psychosis causes the woman to lose touch with reality. It takes place in combination with an underlying psychiatric disorder, such as bipolar affective disorder, schizophrenia, or major depression. In some women, a part-partum psychosis is the only psychotic episode they will ever experience, but, for others, it is just the first indication of a psychiatric disorder. Only 1 to 2 women per 1,000 births develop post-partum psychosis.[1]It is extremely rare, though often treatable. However, much media coverage of post-partum depression has focused on psychosis, especially following the Andrea Yatescase.

Andrea Yates case

After the National Organization for Women(NOW) insisted that Andrea Yateshad postpartum depression, the Individualist Feministsof Ifeminist.com pointed out that postpartum depression is quite common and most sufferers do not murder their children. In fact, Yates suffered from postpartum psychosis. After Ifeminist.com pointed out that this stigmatizeda large number of mothers and made them less likely to seek professional help, NOW removed their claims from their official website. Some believe that Yates' fundamentalist churchbears some responsibility for the murder, as the church allegedly urged her to ignore her psychiatrist's orders. Yates methodically drownedher children in a bathtubin her Clear Lake City, Houston, Texashouse on June 20, 2001.

References

Ackerman, J. T., Eadie, J. M., Yarris, G. S., Loughman, D. L., & Mclandress R. M. (2003) Cues for investment: nest desertion in response to partial clutch depredation in dabbling ducks. Animal Behaviour, 66, 871–883.

Beck, C.T. The effects of postpartum depression on maternal-infant interaction: a meta-analysis. Nursing Research 44:298?304, 1995.

Beck, C.T. A meta-analysis of predictions of postpartam depression. Nursing Research 45:297?303, 1996a.

Beck, C.T. A meta-analysis of the relationship between postpartum depression and infant temperament. Nursing Research 45:225?230, 1996b.

Bect, C.T. (2001) Predictors of Postpartum Depression: An Update. Nursing Research, 50, 275-285.

Canadian Pediatric Society. "Depression in Pregnant Women and Mothers: How Children are Affected." October 2004. Accessed 22 November 2005 at http://www.caringforkids.cps.ca/babies/Depression.htm.

Cezilly, F. (1993) Nest desertion in the greater flamingo, Phoenicopterus ruber roseus. Animal Behaviour, 45, 1038-1040.

Cohn, J.F., Campbell, S.B., Matias, R., and Hopkins, J. Face-to-face interactions of postpartum depressed and nondepressed mother-infant pairs at 2 months. Developmental Psychology 26:15?23, 1990.

Cohn, J.F., Campbell, S.B., and Ross, S. Infant response in the still-face paradigm at 6 months predicts avoidant and secure attachment at 12 months. Special Issue: Attachment and developmental psychopathology. Development and Psychopathology 3:367?376, 1991.

Field, T., Sandburg, S., Garcia, R., Vega-Lahr, N., Goldstein, S., and Guy, L. Pregnancy problems, postpartum depression, and early mother-infant interactions. Developmental Psychology 21:1152? 1156, 1985.

Fowles, E.R. Relationships among prenatal maternal attachment, presence of postnatal depressive symptoms, and maternal role attainment. Journal of the Society of Pediatric Nurses 1:75?82, 1996.

Gendron, M. & Clark, R. G. (2000) Factors affecting brood abandonment in gadwalls (Anas strepera). Canadian Journal of Zoology, 78, 327–331.

Gotlib, I.H., Whiffen, V.E., Wallace, P.M., and Mount, J.H. Prospective investigation of postpartum depression: factors involved in onset and recovery. Journal of Abnormal Psychology 100:122? 132, 1991.

Harris, B. Biological and hormonal aspects of postpartum depressed mood: working towards strategies for prophylaxis and treatment. Special Issue: Depression. British Journal of Psychiatry 164:288?292, 1994.

Hoffman, Y., and Drotar, D. The impact of postpartum depressed mood on mother-infant interaction: like mother like baby? Infant Mental Health Journal 12:65?80, 1991.

Jennings, K.D., Ross, S., Popper, S., and Elmore, M. Thoughts of harming infants in depressed and nondepressed mothers. Journal of Affective Disorders, 1999.

Murray, L. Intersubjectivity, object relations theory, and empirical evidence from mother-infant interactions. Special Issue: The effects of relationships on relationships. Infant Mental Health Journal 12:219?232, 1991.

Murray, L., and Cooper, P.J. The impact of postpartum depression on child development. International Review of Psychiatry 8:55?63, 1996.

O?Hara, M.W. Depression and marital adjustment during pregnancy and after delivery. American Journal of Family Therapy 13:49?55, 1985.

O?Hara, M.W. Postpartum Depression: Causes and Consequences. New York: Springer-Verlag, 1995.

O?Hara, M.W., and Swain A.M. Rates and risk of postpartum depression ? A meta-analysis. International Review of Psychiatry 8:37?54, 1996.

Trivers, R. L.(1972) Parental investment and sexual selection. In B. Campbell (Ed.), Sexual Selection and the Descent of Man (pp. 136-179). London: Heinemann.

External links

• Postpartum Depression, from the National Woman's Health Information Center
• Postpartum DepressionPostpartum Support International
• Postpartum Depressionfrom the Encyclopedia of Mental Disorders
• Information For CouplesTips for Mothers with Post Partum Depression
• National Organization for Women
• ifeminists.com
• The functions of postpartum depression
• Perinatal sadness among Shuar women: A test of the psychic pain hypothesis
• C-Section Recovery: Depression
• MedlinePlus Overviewpostpartumdepression
• GPnotebook-818610164de:Postpartale Stimmungskrisen

fr:Dépression post-natale nl:Postpartumdepressie zh:产后抑郁症

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It uses material from the Wikipedia article Postpartum depression.