Although mental health is a better understood, more widely discussed topic in our society today, a degree of stigmatization persists, especially in severe cases with links to homelessness, job loss, poverty and human rights. It is also still present in environments such as the workforce, healthcare settings and educational environments, and often internalized by the sufferer themselves. This book provides a philosophical account of what mental illness stigma is, why it persists, what harms it causes to people subject to public stigma or who internalize stigma in themselves, and what can be done about it. It analyzes the process of stigmatization, both public and internalized, in the twenty-first century Western culture, especially in the United States - including the process of stereotyping, the expressive harm of stereotypes, the role of social norms in creating adaptive preferences and shaping behaviour, the moral distancing and status loss involved with social exclusion and dehumanization, and the harm of discrimination.