How are seizures defined medically?

Seizures are defined as episodes of abnormal electrical activity in the brain. This electrical activity can disrupt normal functioning and lead to a variety of symptoms, including convulsions, loss of consciousness, or unusual sensations and behaviors. Understanding that seizures stem from abnormal brain activity is crucial, as it distinguishes them from other symptoms like muscle spasms, loss of balance, or memory loss, which can have different underlying causes and implications. The medical definition focuses specifically on the brain's electrical activity being the root issue, and this is key for diagnosis, treatment, and management of various seizure disorders.