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seizure

(Science: clinical sign, neurology) A sudden attack or convulsion due to involuntary electrical activity in the brain. It is due to an uncontrolled burst of electrical activity in the brain that can result in a wide variety of clinical manifestations such as: muscle twitches, staring, tongue biting, urination, loss of consciousness and total body shaking.

Examples include: focal seizure, absence seizure, partial seizure, psychomotor seizure, petit-mal seizure and grand-mal seizures.