Non-epileptic seizures (NES) is a descriptive term for a diverse group of disorders which refers to paroxysmal events that can be mistaken for epilepsy, but are not due to an epileptic disorder. There are two sub-categories of NES:
- Physiological: includes a broad spectrum of disorders, eg syncope, paroxysms of acute neurological insults, paroxysmal toxic phenomena, non-toxic organic hallucinosis, non-epileptic myoclonus, sleep disorders, paroxysmal movement disorders, paroxysmal endocrine disturbances and transient ischaemic attacks (TIAs). Several factors can trigger a physiologic seizure such as abnormal sleeping patterns, excessive amounts of alcohol, fainting spells, hypoglycemia, low blood pressure, and other physiological conditions that affect the sugar and oxygen levels as well as the flow of blood into the brain.
- Psychogenic seizures include different types:
- The true prevalence is unknown.