The physical findings or changes in behavior that occur after an episode of abnormal electrical activity in the brain.
A sudden misfire among nerve cells in the brain that impairs normal brain function. Seizures are the most common symptom of epilepsy.
Petite mal and grand mal seizure.
A fit, convulsion or sudden contraction of the muscles, especially in a heart attack, stroke or epileptic fit.
A sudden period of involuntary, uncontrolled electrical activity in the brain, often accompanied by violent muscular contractions called convulsions. Most widely known are the wide range of recurrent seizures that result from long-term conditions; these generally fall under the umbrella name of epilepsy.
A sudden attack of symptoms usually associated with diseases such as epilepsy. Epileptic seizures are due to the random, uncontrolled firing of a group of cerebral neurons, which results in a variety of sensory and motor manifestations.
Sudden, transient electrical disturbances in the brain resulting from abnormal firing of nerve impulses which may or may not be associated with convulsions.
A sudden episode of uncontrolled electrical activity in the brain. Seizures may cause a series of involuntary muscle contractions, behavioral changes, sensory abnormalities, or a temporary lapse in consciousness. Seizures are often but not always a sign of epilepsy, a neurological disorder characterized by repeated seizures, caused by abnormal electrical activity in the brain. About half of all seizures have no known cause. In other cases, seizures are linked to infection and fever, trauma, substance abuse, or other medical problems.
Also called a fit, this is a sudden burst of uncontrolled electrical activity in the brain. A seizure may be generalized or partial: in the former, abnormal electrical activity may affect the whole brain, resulting in abnormal movements of many or all parts of the body and a period of unconsciousness. This is characteristic of epilepsy; in partial seizures, abnormal electrical activity occurs in one part of the brain. Hallucinations may occur and localized symptomis include muscular twitching or a tingling sensation in a small area of the face, arm, leg or trunk. Different neurological or medical disorders may cause seizures: for example, stroke, brain tumour, head injury, infection or metabolic disturbance. People dependent on alcohol may suffer seizures if they stop drinking. Treatment is of the underlying condition coupled with antiepileptic drugs such as carbamazepine, lamotrigine, sodium valproate or phenytoin sodium.
A convulsion or other clinically detectable event caused by a sudden discharge of electrical activity in the brain.
An attack caused by a sudden storm of brain activity, during which the person may lose consciousness, the arms and legs may jerk, and the teeth may lock together.
An abrupt occurrence of unusual electrical activity in the brain. Repeated seizures are characteristic of epilepsy.
Seizures can be categorized as partial or generalized. In partial seizures, the abnormal activity is limited to a specific region of the brain. Symptoms can involve sensations like tingling or twitching in a small part of the body, as well as hallucinations, fear, or déjà vu. In contrast, generalized seizures involve the widespread spread of abnormal activity throughout the brain, leading to a loss of consciousness.
Seizures can be triggered by various factors such as head injuries, strokes, brain tumors, infections, metabolic imbalances, alcohol withdrawal, or hereditary alcohol sensitivity. In children, high fever can also lead to seizures. Anticonvulsant medications are effective in managing seizures and diminishing their occurrence.
An abrupt onset or reappearance of an illness.
An epileptic seizure, cardiac arrest, or cerebral stroke.