In differentiating seizures from syncope, all the following features favor the former (seizures) except
(C) Clear sensorium after the event FEATURES THAT DISTINGUISH GENERALIZED TONIC-CLONIC SEIZURE FROM SYNCOPEFeaturesSeizureSyncope* Immediate precipitating factorsUsually noneEmotional stress, Valsalva,* Orthostatic hypotension, cardiac etiologies * Premonitorysy mptomsNone or aura (e.g., odd odor)Tiredness, nausea, diaphoresis, tunneling of visior* Posture at onsetVariableUsuallyerect* Transition to unconsciousnessOften immediateGradual over secondsa* Duration of unconsciousnessMinutesSeconds* Duration of tonic or clonic movements30-60sNever more than 15 s* Facial appearance during eventCyanosis, frothing at mouthPallor* Disorientation and sleepiness after eventManyminutes to hours<5 min* Aching of muscles after eventOftenSometimes* Biting of tongueSometimesRarely* IncontinenceSometimesSometimes* HeadacheSometimesRarely
Clear focal onset
Convulsive muscular contractions
Clear sensorium after the event
Tongue biting
Miscellaneous