Professor Oyebode is an expert in descriptive and clinical psychopathology. He is an authority on the cognitive neuropsychiatry of delusional misidentification syndromes and on other rare and unusual psychiatric syndromes. He is the author of Sims’ Symptoms in the Mind: textbook of descriptive psychopathology. This is the leading English language text on psychopathology and has been translated into Estonian, Italian, Korean and Portuguese He is also a recognised expert in medical humanities writing about the value of literature to medicine.