出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/08/23 22:40:39」(JST)
| Postpartum psychosis | |
|---|---|
| Synonyms | puerperal psychosis |
| Rates of psychoses among Swedish first-time mothers | |
| Classification and external resources | |
| Specialty | psychiatry |
| ICD-10 | F53.1 |
| ICD-9-CM | 648.4 |
| MeSH | D019052 |
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[edit on Wikidata]
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Postpartum psychosis is a rare psychiatric emergency in which symptoms of high mood and racing thoughts (mania), depression, severe confusion, loss of inhibition, paranoia, hallucinations and delusions set in, beginning suddenly in the first two weeks after childbirth. The symptoms vary and can change quickly.[1] The most severe symptoms last from 2 to 12 weeks, and recovery takes 6 months to a year.[1]
About half of women who experience it have no risk factors; but women with a prior history of mental illness, especially bipolar disorder, a history of prior episodes of postpartum psychosis, or a family history are at a higher risk.[1] It is a not a formal diagnosis, but is widely used to describe a condition that appears to occur in about 1 in a 1000 pregnancies. It is different from postpartum depression and from maternity blues.[2] It may be a form of bipolar disorder.[3]
It often requires hospitalization, where treatment is antipsychotic medication, mood stabilizers, and, in cases of strong risk for suicide, electroconvulsive therapy.[1] Women who have been hospitalized for a psychiatric condition immediately after delivery are at a much higher risk of suicide during the first year after delivery.[4]
There is a need for further research into the causes and prevention; the lack of a formal diagnostic category and the difficulty of conducting clinical trials in pregnancy hinder research.[1]
Postpartum psychosis is a psychiatric emergency related to care of women after they give birth.[1][2] It is different from postpartum depression and from maternity blues.[2]
The condition is not recognized in the DSM-5 nor in the ICD-10 but it is widely used clinically.[1]
It may be a form of bipolar disorder.[3]
Symptoms usually begin suddenly in the first two weeks after delivery,[2] sometimes in the first two to three days after giving birth.[5] Symptoms vary and can change quickly, and can include high mood and racing thoughts (mania), depression, severe confusion, losing inhibitions, paranoia, hallucinations and delusions.[2]
In contrast, about half of women have the maternity blues after birth, which is characterized by symptoms of mild mood swings, anxiety, and irritability that start about 3 to 4 days after delivery and last about a week; postpartum depression is also different — it is experienced by 10 to 15% of women after birth and is similar to major depressive disorder.[2]
25 to 50% of women with a history of mental illness experience postpartum psychosis;[2] around 37% of women with bipolar disorder have a severe postpartum episode.[3] Women with a prior episode of postpartum psychosis have about a 30% risk of having another episode in the next pregnancy.[3]
For a woman with no history of mental illness who has a close relative (a mother or sister) who had postpartum psychosis, the risk is about 3%.[2] There may be a genetic component; while mutations in chromosome 16 and in specific genes involved in serotoninergic, hormonal, and inflammatory pathways have been identified, none had been confirmed as of 2014.[1]
Family history of affective psychosis, prenatal depression, and autoimmune thyroid dysfunction also increase the risk of postpartum psychosis.[6]
About half of women who experience postpartum psychosis had no risk factors.[1] Many other potential factors like pregnancy and delivery complications, caesarean section, sex of the baby, length of pregnancy, changes in psychiatric medication, and psychosocial factors have been researched and no clear association has been found; the only clear risk factor identified as of 2014 was that postpartum psychosis happens more often to women giving birth for the first time, than to women having second or subsequent deliveries, but the reason for that was not known.[1] There may be a role for hormonal changes that occur following delivery, in combination with other factors; there may be a role changes in the immune system as well.[1]
For women taking psychiatric medication, the decision as to whether continue during pregnancy and whether to take them while breast feeding is difficult in any case; there is no data to guide this decision with respect to preventing postpartum psychosis.[2] There is no data to guide a decision as to whether women at high risk for postpartum psychosis should take antipsychotic medicine to prevent it.[2] For women at risk of postpartum psychosis, informing medical care-givers, and monitoring by a psychiatrist during pregnancy, in the perinatal period, and for a few weeks following delivery, is recommended.[2]
For women with known bipolar disorder, taking medication during pregnancy roughly halves the risk of a severe postpartum episode, as does starting to take medication immediately after the birth.[3]
In most cases hospital admission is necessary.[2] Antipsychotic drugs and mood stabilizing drugs such as lithium are typically administered[2] but is not clear if mood stabilizers can be titrated to a high enough level quickly enough to be effective.[1] Electroconvulsive therapy may be considered, especially if there is a high risk of suicide.[1]
Family support may be provided via a social worker.[2]
The most severe symptoms usually last from 2 to 12 weeks; it can take between six months and a year to recover.[2]
Women often experience low self-esteem and difficulties as they recover, but many women fully recover; many women also have a hard time bonding with their child as they recover, but end up with healthy relationships with their babies.[2]
About half of women who experience postpartum psychosis have further experiences of mental illness unrelated to childbirth; further pregnancies do not change that risk.[2]
Women who have been hospitalized for a psychiatric illness shortly after giving birth have a 70 times greater risk of suicide in the first year after they gave birth.[4]
Postpartum psychosis occurs in around 1 in 1000 deliveries,[2] but this figure is uncertain due to the lack of diagnostic categories for tracking in databases.[1]
Puerperal mania was first clearly described by the German obstetrician Friedrich Benjamin Osiander in 1797,[7][third-party source needed] and a literature of over 2,000 works has accumulated since then.[citation needed]
The French psychiatrist Louis-Victor Marcé (1862) suggested that the menstrual cycle is important and drew parallels with menstrual psychosis.[8]
Episodes of postpartum psychosis used to be explained by eclampsia, "delirium", thyroid disorders, or infection.[1]
In the UK, a series of workshops called "Unravelling Eve" were held in 2011, where women who had experienced postpartum depression shared their stories.[9]
Harriet Sarah, Lady Mordaunt (1848–1906), formerly Harriet Moncreiffe, was the Scottish wife of an English baronet and Member of Parliament, Sir Charles Mordaunt.[10] She was the defendant in a sensational divorce case in which the Prince of Wales (later King Edward VII) was embroiled; after a controversial trial lasting seven days, the jury determined that Lady Mordaunt was suffering from “puerperal mania” and her husband's petition for divorce was dismissed, while Lady Mordaunt was committed to an asylum.[11]:36–37
Several nations including Canada, Great Britain, Australia, and Italy recognize postpartum mental illness as a mitigating factor in cases where mothers kill their children.[12] In the United States, such a legal distinction was not made as of 2009.[12] In the US, an insanity defense is not available in all states.[13] Britain has had the Infanticide Act since 1922.
The lack of a formal diagnosis in the DSM and ICD has hindered research.[1] The causes of postpartum depression are unknown and are under investigation.[1][2]
There is a need to better understand whether taking medication for prevention during pregnancy or immediately following birth, is useful.[3]
Mental and behavioral disorders (F 290–319)
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| リンク元 | 「産褥期精神病」 |
| 関連記事 | 「puerperal」 |