Absence seizures are characterized on EEG by: (A) 3 Hz spike and wave, (B) 1-2 Hz spike and wave, (C) Generalized poly spikes, (D) Hypsarrythmia
Answer is A. EEG shows generalized, symmetric, 3-Hz spike-and-wave discharge that begins and ends suddenly, superimposed on a normal EEG background. Ref - Harrison's internal medicine 20e pg3051-3052, 3060f