Perinatal (or "prenatal") stroke includes strokes that occur between the 28 weeks of gestation and the 28 days after birth. Stroke occurs more frequently in the perinatal and prenatal age group than in older children.
Some perinatal strokes are caused by inherited clotting disorders or coagulation abnormalities that make the infant more likely to have a blood clot. Congenital heart disease and sickle-cell disease are common causes of stroke in children. No cause can be detected in about a fifth of the children with ischemic stroke, but many of these children seem to recover well after birth.
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