What characterizes a seizure?

A seizure is characterized primarily by a disruption of normal brain activity. During a seizure, there is abnormal electrical activity in the brain that can lead to various physical and behavioral symptoms. This alteration can manifest in several ways, including convulsions, loss of consciousness, muscle spasms, and sensory disturbances, depending on the type and severity of the seizure.

While other symptoms like an increase in heart rate or a brief loss of consciousness may sometimes occur during a seizure, they are secondary effects and not the defining characteristic. Additionally, a sudden drop in body temperature is not associated with seizures at all; it may signify a different medical condition altogether. Understanding that the core feature of a seizure lies in the disruption of brain function is crucial for recognizing and responding to such medical emergencies effectively.