Chorea gravidarum is a rare  type of chorea which presents with involuntary abnormal movement, characterized by abrupt, brief, nonrhythmic, nonrepetitive movement of any limb, often associated with nonpatterned facial grimaces. It is a complication of pregnancy which can be associated with eclampsia and its effects upon the basal ganglia. It is not a causal or pathologically distinct entity but a generic term for chorea of any cause starting during pregnancy. It is associated with history of Sydenham's chorea.
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According to Willson and Preece, 1 the first description of chorea with onset during pregnancy chorea gravidarum was made by Horstius in The English translation of the Latin work provided in their article, however, indicates that the woman described by Horstius in fact developed chorea at the puerperium.
This finding, as well as the persistence of the movement disorder, uncommon in chorea gravidarum, 2 suggests that the chorea of the patient was related to some other cause, perhaps a stroke.
In the 19th century, several authors 3 - 6 published important studies on chorea gravidarum that, along with the article by Willson and Preece, 1 helped to forge the contemporary way of viewing this peculiar form of chorea. Cardoso F. Chorea Gravidarum. Arch Neurol. Coronavirus Resource Center.
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Chorea gravidarum: a rarity in West still haunts pregnant women in the East
A pregnant woman, in her early 20s, presents with chorea following an emotional outburst. While the family members feel it to be a spirit haunting her, we try to establish the medical diagnosis of the present condition. There is a history of rheumatic fever in the past and examination reveals choreioathetoid jerky movements of her upper limbs with jerky speech, spooning of her limbs and demonstration of milkmaid's grip. Laboratory investigations did not reveal anything interesting. We discuss the diagnosis and management of this patient. Chorea gravidarum is a rare movement disorder of pregnancy.