Dissociative anesthetics are a class of drugs that cause a sense of detachment from the body and the environment. They are often used in medical settings for anesthesia, allowing patients to undergo surgery without feeling pain or being aware of the procedure. Common examples include ketamine and PCP, which can alter perception and create feelings of euphoria or hallucination. These substances work by blocking certain receptors in the brain, particularly the NMDA receptor, which is involved in pain perception and memory. While they can be useful in controlled medical environments, misuse can lead to dangerous side effects, including confusion and impaired motor function.