Autonomic features are characterized by autonomic phenomena, which can involve cardiovascular, gastrointestinal, vasomotor, and thermoregulatory functions. Examples include palpitations, nausea, butterflies, hunger, chest pain, urge to urinate or defecate, goosebumps, sexual sensation, feeling hot or cold, pilo-erection, pallor, tachycardia or bradycardia/asystole, flushing, pupillary changes and lacrimation.

CAUTION Ictal asystole of sufficient duration (> 5 seconds) to cause reduced brain perfusion may result in loss of body tone, stiffening and/or convulsive movements.

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