Reflex epilepsy: Epilepsy in which seizures are consistently provoked by a certain trigger (e.g., lights, music, hormonal changes during menstrual cycle).For more information about individual epilepsy syndromes, see “ Generalized epilepsy in childhood.”.Common features include triggers, age of onset, EEG patterns, radiological findings, and associated conditions (e.g., depression and other mood disorders, psychosis, and anxiety disorders).Diagnosis of an epilepsy syndrome: a group of epileptic disorders characterized by a set of features typically occurring together.One unprovoked or reflex seizure in an individual with a high risk of subsequent seizures (e.g., after traumatic brain injury, stroke, CNS infections).Two or more unprovoked or reflex seizures separated by more than 24 hours.Epilepsy: a chronic neurologic disorder characterized by a predisposition to seizures as defined by one of the following:.Postictal: occurring signs after a seizure.Interictal: occurring between the seizures.Descriptors: the following terms are used to describe events, clinical features, and EEG signs related to seizures.Unprovoked seizure: a seizure that occurs in the absence of an identifiable cause or beyond the specified interval after an acute CNS condition.Reflex seizure: a seizure constantly evoked by a particular stimulus (trigger) that lowers seizure threshold (e.g., flashing lights see “ Seizure triggers”).Drug/ alcohol intoxication or withdrawal.Exacerbation of multiple sclerosis or other autoimmune diseases.Within 1 week of stroke, traumatic brain injury ( TBI), anoxic encephalopathy, or intracranial surgery.Acute symptomatic seizure ( provoked seizure): a seizure that occurs at the time or soon after the onset of an acute systemic or CNS condition.
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