MSFinals-5363

A 28-year-old man has been admitted to the psychiatric ward under section 2 of the mental health act for suspected first-episode psychosis. During his mental state examination, burns are observed on his arms and he claims that insects are burrowing into his skin. He suggests that the burns are caused by bleach. The evaluating psychiatrist could not detect any insects, and when questioned, the patient became agitated and insisted that his skin was infested. What is the most probable disorder being described?