Seizures are abnormal electrical impulses or discharges in the brain. They may originate in a specific part of the brain (focal) or affect the whole brain at once (generalised). Seizures can manifest in various ways in the body such as inattention (absence seizures), altered mental state, tonic and clonic movements, or convulsions. Seizures are commonly associated with a disorder called epilepsy, which is characterised by repeated and unprovoked seizures.