
I first met 22-year-old “Linda” when she was brought to the emergency department (ED) after a drug overdose. Although the drug Linda had ingested-clonazepam-was a CNS depressant, she did not appear groggy or sedated. In fact, her speech was rapid and pressured; she showed marked psychomotor agitation, which was demonstrated by her twitching feet and the incessant twisting of her hair. This presentation suggested a paradoxical response to her medication. Her chief concern was, “I feel as if I am going to come out of my skin.” I was puzzled.