Mental health and mental illness are of profound and urgent importance to social and individual experience - discussion of which requires care and sensitivity. The philosophy of mental health and psychiatry can contribute to this discussion by unveiling the conceptual underpinnings of how we think about mental health and mental illness, analysing the core ethical problems in psychiatry, and identifying the ways in which various forms of injustice are made manifest in social attitudes towards mental health. In this class, we shall explore the philosophical questions around mental health and consider their significance in the real world through key texts on topics including neurodiversity; conceptions of mental illness and health; diagnosis and self-diagnosis; criminal responsibility; public mental health programmes; psychiatry, gender, and race.