the hallucinogenic drug ketamine can reduce social anxiety, a condition that is influenced by glutamate levels in the brain. Administration of ketamine to people in pain has differential effects on cutaneous and visceral pain, with minimal side effects. For visceral pain, ketamine reduces both pain and unpleasantness. For cutaneous pain, ketamine reduces only unpleasantness. And really, this is what anxiety is: a feeling of unpleasantness and the apprehension that it will continue in the future. The
