What mainly causes seizures?

Seizures are primarily caused by abnormal electrical activities in the brain. This abnormality results when there is a sudden surge of electrical impulses in the brain's neurons, altering normal electrical communication and leading to various symptoms, which can range from brief lapses of consciousness to severe convulsions.

While infections, structural brain lesions, and head injuries can all contribute as underlying causes or triggers of seizures, the core mechanism that results in an actual seizure event is the disruption in the normal electrical signaling of the brain. This can occur due to various conditions like epilepsy, but in every instance, the defining feature is that the brain's electrical activity becomes disorganized and excessive, leading to the seizures. Understanding the fundamental role of electrical disturbances is crucial in managing and treating seizures effectively.