Early in the history of medicine, it was recognized that severe mental illness sometimes started abruptly in the days after childbirth, later known as postpartum psychosis or puerperal psychosis. Gradually, it became clear that this was not a single and unique phenomenon, but a group of at least twenty distinct disorders.Psychosis implies the presence of manic symptoms, stupor or catatonia, perplexity, confusion, disorders of the will and self, delusions and/or hallucinations. Psychiatric disorders that lack these symptoms are excluded; depression, however severe, is not included, unless there are psychotic features. Of this group of psychoses, postpartum bipolar disorder is overwhelmingly the most common in high-income nations. Postpartum bipolar disorder
Signs and symptoms
Almost every symptom known to psychiatry occurs in these mothers – every kind of delusion including the rare delusional parasitosis, delusional misidentification syndrome, Cotard delusion, erotomania, the changeling delusion, denial of pregnancy or birth, command hallucinations, disorders of the will and self, catalepsy and other symptoms of catatonia, self-mutilation and all the severe disturbances of mood. In addition, literature from the 18th century also describes symptoms not generally recognized, such as rhyming speech, enhanced intellect, and enhanced perception.As for collections of symptoms (syndromes), about 40% have puerperal mania, with increased vitality and sociability, reduced need for sleep, rapid thinking and pressured speech, euphoria and irritability, loss of inhibition, violence, recklessness and grandiosity (including religious and expansive delusions); puerperal mania is considered to be particularly severe, with highly disorganized speech, extreme excitement and eroticism.Another 25% have an acute polymorphic (cycloid) syndrome.
Although its frequency in nations with excellent obstetric services has fallen below 1/500 pregnancies, it is still common in many other countries. The primary pathology is in the placenta, which secretes an anti-angiogenic factor in response to ischaemia, leading to endothelial dysfunction. In fatal cases, there are arterial lesions in many organs including the brain. This is the second most frequent organic psychosis, and the second to be described. Psychoses occur in about 5% of cases, and about 240 detailed cases have been reported. It particularly affects first time mothers. Seizures may begin before, during or after labour, but the onset of psychosis is almost always postpartum. These mothers usually experience delirium but some have manic features. The duration is remarkably short, with a median duration of 8 days. This, together with the absence of a family history and of recurrences, contrasts with puerperal bipolar/cycloid psychoses. After recovery, amnesia and sometimes retrograde memory loss may occur, as well as other permanent cerebral lesions such as dysphasia, hemiplegia or blindness. A variant was described by Donkin . He had been trained by Simpson (one of those who first recognized the importance of albuminuria) in Edinburgh, and recognized that some cases of eclamptic psychosis occurred without seizures; this explains the interval between seizures (or coma) and psychosis, a gap that has occasionally exceeded 4 days: seizures and psychosis are two different consequences of severe gestosis.