Desensitization is a psychological technique used in therapy to help individuals overcome fears, phobias, and anxieties. It involves exposing the person to the feared object or situation in a controlled and gradual way, allowing them to become desensitized to the fear response. This process typically involves relaxation techniques and repeated exposure to the feared stimulus until the anxiety response diminishes. Desensitization can be effective in treating a variety of conditions, such as specific phobias, PTSD, and social anxiety disorder.