The patient with seizure may present in full tonic-clonic seizure or may have experienced a seizure witnessed by others. Seizure may be preceded by an aura or have sudden onset without warning. Most patients presenting with seizure have a preexisting seizure disorder, and the most common etiology of seizure is noncompliance with medication. Two of the most telling physical exam findings of a patient who has had a seizure include incontinence and lateral tongue biting, but the lack of these signs does not rule out seizure.