Final answer:
A guardian or conservator can be appointed by the courts to manage an individual's affairs, with a guardian typically handling personal matters and a conservator dealing with finances. A health care proxy is a legal document for medical decision-making when someone can't make those decisions themselves.
Step-by-step explanation:
An individual who is appointed by the courts to manage another individual's property, finances, housing, and medical treatment is commonly referred to as a guardian or a conservator.
The role depends on jurisdictional definitions, but generally, a guardian is responsible for personal and health care decisions, while a conservator handles financial affairs. In the context of healthcare, a health care proxy is a legal document that appoints a specific person to make medical decisions for a patient who cannot make those decisions for themselves.