Elements of history that suggest absence seizures include sudden loss of facial expression repetitive movements (such as lip smacking or blinking) events occurring regardless of setting (not only while watching television or in the car for example, where staring is more likely behavioral) and events that occur in the midst of an activity such as chewing or playing. Absence seizures typically cause sudden cessation of activity that is easily recognizable. A history of staring is common in children, and staring spells are not always absence seizures or other seizure types. CAE can be diagnosed during an outpatient clinic visit with a careful history, physical exam including hyperventilation, and a routine EEG.
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