Generalized Tonic-Clonic Seizures
Seizure eTraining Slide 8

Can have one symptom Tonic or Clonic, or a mixture of both Tonic-Clonic

Tonic seizures cause stiffening of muscles of the body, generally those in the back, legs, and arms. Clonic seizures cause repeated jerking movements of muscles on both sides of the body. Tonic-clonic seizures cause a mixture of symptoms, including stiffening of the body and repeated jerks of the arms and/or legs as well as loss of consciousness. Tonic-clonic seizures are sometimes referred to by an older term: grand mal seizures.  

A person having a generalized tonic-clonic seizure:  

  • may cry out
  • Loss of consciousness 
  • fall to the ground
  • rigidity and muscle jerks lasting up to a few minutes
  • extended period of confusion and fatigue afterward


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