Ketamine is a medication primarily used as an anesthetic in medical settings. It works by blocking certain receptors in the brain, leading to a dissociative state, which means it can create feelings of detachment from the body and environment. Originally developed in the 1960s, it is often used for surgical procedures and pain management. In recent years, ketamine has gained attention for its potential in treating mental health conditions, particularly depression and post-traumatic stress disorder (PTSD). Research suggests that it may provide rapid relief from symptoms, even in patients who have not responded to traditional treatments. However, its use for these purposes is still being studied and is typically administered under medical supervision.