A mental illness or a psychological or emotional disability can be among the prerequisites for the appointment of legal guardianship. Therefore, it is extremely helpful and necessary for guardians to have knowledge of the medical fundamentals. According to the ISG study from 2018, in 66% of cases, the area of responsibility for health care is assigned. This presents numerous challenges. Here, professional guardians can find legally secure information, practical assistance, and solutions for their daily work. This is a practical handbook that explains medical and legal questions in a clear, up-to-date, and reliable manner—based on the latest scientific findings, current legal regulations, case law, and specialized literature. You will find many examples where experienced practitioners demonstrate solutions. The work also includes focuses on particularly relevant practical topics.