overarousal

over- +‎ arousal

overarousal (uncountable)

1. excessive arousal
   • 1973, Oliver Sacks, Awakenings:

     In every such patient I found a sort of triad or tryptich: profoundly slow activity in the absence of medication, very excited and often convulsive activity with overarousal on medication, and between these, so to speak, a very attenuated, narrow band, showing relatively normal activities between the abnormals.

• underarousal