A sudden episode of abnormal electrical activity in the brain. Recurrent seizures occur in epilepsy.
Seizures may be partial or generalized. In a partial seizure, the abnormal activity is confined to one area of the brain. Symptoms include tingling or twitching of a small area of the body, hallucinations, fear, or déjà vu. In a generalized seizure, the abnormal activity spreads through the brain, causing loss of consciousness.
Causes of seizures include head injury, stroke, brain tumour, infection, metabolic disturbances, withdrawal in alcohol dependence, or hereditary alcohol intolerance.
In children, high fever may cause seizures.
Anticonvulsant drugs can control seizures or reduce their frequency.
Also called a FIT, this is a sudden burst of uncontrolled electrical activity in the BRAIN. A seizure may be generalised or partial: in the former, abnormal electrical activity may affect the whole brain, resulting in unconsciousness and characteristic of EPILEPSY; in partial seizures, abnormal electrical activity occurs in one part of the brain. HALLUCINATIONS may occur and localised symptoms include muscular twitching or a tingling sensation in a small area of the face, arm, leg or trunk. Di?erent neurological or medical disorders may cause seizures: for example, STROKE, brain tumour, head injury, infection or metabolic disturbance (see METABOLISM; METABOLIC DISORDERS). People dependent on alcohol may suffer seizures if they stop drinking. Treatment is of the underlying condition coupled with antiepileptic drgus such as CARBAMAZEPINE, lamotrigine, SODIUM VALPROATE or PHENYTOIN SODIUM.
n. an event with symptoms that mimic an epileptic seizure but that does not involve abnormal discharges of cortical neurons that would be captured on an EEG. It can be caused by both physiological and psychological conditions. Physiological causes include syncopes, cataplexy, migraine, narcolepsy, parasomnias, and tics. Psychological non-epileptic seizures, also known as psychogenic non-epileptic seizures, can arise from acute distress or anxiety or in the context of a *somatic symptom. People who suffer from epilepsy may have non-epileptic seizures as well. The main visible difference between a non-epileptic seizure and an epileptic seizure is that the former commonly lasts longer than two minutes and can last up to 30 minutes. Also there is occasional pelvic thrusting, the patient’s eyes and mouth are typically closed, and side-to-side head movements are more common than in epileptic seizures. Crying or talking during the attack is possible. There is no *postictal phase. Other names for non-epileptic seizures include pseudo seizures, functional seizures, and conversion seizures.... non-epileptic seizure
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