Addiction medicine deals with patients suffering from a wide variety of addiction problems. It aims to free people from their addictions while providing support, counseling, and mental health services. Medical professionals who work in addiction medicine can help patients work through the detoxification process as well as provide harm reduction tactics and rehabilitation services. They may also treat conditions like hepatitis and HIV, which are related to addiction issues. This type of medicine is often associated with public health.

An internist or Internal Medicine doctor is someone who specializes in diagnosing and treating illnesses, diseases, and health problems. Most internists are also primary care doctors and treat patients on a regular basis. They can diagnose and treat common illnesses or more serious problems. Most people see an internist regularly. Those with chronic illnesses may do so on a monthly or even weekly basis. Internists are the most common types of doctors.