RT Book, Section A1 Sullivan, Joseph E. A1 Bakey, Catherine A1 Dlugos, Dennis J. A2 Sirven, Joseph I. A2 Stern, John M. SR Print(0) ID 1103049402 T1 Generalized Tonic Seizures T2 Atlas of Video-EEG Monitoring YR 2011 FD 2011 PB McGraw-Hill Education PP New York, NY SN 9780071597425 LK neurology.mhmedical.com/content.aspx?aid=1103049402 RD 2024/10/09 AB Tonic seizures have long been recognized as a seizure type that often occurs in the setting of symptomatic generalized epilepsy, more specifically, as part of the Lennox-Gastaut syndrome. Although this may be the most common clinical scenario where tonic seizures are seen, they occur in other epilepsy syndromes and can also be a manifestation of focal epilepsy with secondary generalization. The prominent bilateral involvement of muscle groups led to classifying tonic seizures as a “generalized” seizure type, and though true in many patients, a variety of electroencephalographic (EEG) patterns and clinical phenomena have been described. This chapter will address tonic seizures across the age spectrum, with particular attention paid to specific clinical and neurophysiologic correlates.