Agitation (restlessness)*
Diaphoresis*
Diarrhea*
Disseminated intravascular coagulation
Fever above 100.4° F (38° C)
Hyperreflexia*
Incoordination (ataxia)*
Mental status changes
Confusion*
Hypomania*
Multi-organ failure
Myoclonus*
Ocular clonus
Rhabdomyolysis
Shivering*
Tonic-clonic seizures
Tremor*