All of the following are features of absence seizures except: (A) Usually seen in childhood, (B) 3-Hz spike wave in EEG, (C) Postictal confusion, (D) Preciptation by hyperventilation
Answer is C. Harrison's textbook of internal medicine 17th edition . *Absence seizures(previously petit mal)usually sta in childhood (4-8yrs)or early adolescence *Electrophysiological hallmark is generalized,symmetrical ,3Hz spike-and-wave discharge that begins and ends suddenly,superimposed on normalEEG *Hyperventilation tend to provoke these electroencephalographic discharges *Seizure lasts only for seconds and there is no postictal confusion .