The relationship between migration and mental health is controversial, contested, and pertinent. In a highly mobile world, where voluntary and enforced movements of population are increasing and likely to continue to grow, that relationship needs to be better understood, yet the terminology is often vague and the issues are wide-ranging. Getting to grips with them requires tools drawn from different disciplines and professions. Such a multidisciplinary approach is central to this book. Six historical studies are integrated with chapters by a theologian, geographer, anthropologist, social worker and psychiatrist to produce an evaluation that addresses key concepts and methodologies, and reflects practical involvement as well as academic scholarship. Ranging from the mid-nineteenth century to the present, the book explores the causes of mental breakdown among migrants; the psychological changes stemming from their struggles with challenging life circumstances; and changes in medical, political and public attitudes and responses in different eras and locations.