Doctors of Internal Medicine postgraduate training focuses on the prevention and treatment of adult diseases. Internal Medicine Physicians are equipped to deal with whatever problem a patient brings – no matter how common or how rare. They are trained to solve puzzling diagnostic problems and can handle severe chronic illnesses and situations where several difference illnesses may strike at the same time. Internists also have an understanding of wellness (disease prevention and the promotion of health), women’s health, substance abuse, mental health. They are effective in the treatment of common problems of the eyes, ears, skin, nervous system, and reproductive organs.