Which of the following is NOT one of the main acute causes of hemiplegia in children?

Cerebral palsy is not considered one of the main acute causes of hemiplegia in children. Instead, it is a chronic condition that typically arises from a non-progressive brain injury or malformation occurring during a child's early development. The condition often results in movement and posture disorders, and while it can indeed result in hemiplegia, it is classified as a long-term neurological disorder rather than an acute event.

In contrast, the other options—seizures, intracranial hemorrhage, and ischemic strokes—represent acute medical emergencies that can lead to sudden onset hemiplegia. Seizures can cause temporary paralysis following a postictal state, while intracranial hemorrhage and ischemic stroke can directly damage brain tissue and result in immediate motor deficits. Hence, cerebral palsy stands apart as a long-term diagnosis associated with hemiplegia rather than an acute cause.