Medical deontology is the study of ethical and professional standards and principles that guide medical practitioners. It has three core subdivisions: medical jurisprudence, medical ethics, and medical hodegetics. The document discusses the history of medical deontology from ancient texts like the book of life (Ayurveda) to modern declarations. It outlines six fundamental principles of medical ethics: autonomy, beneficence, non-maleficence, justice, dignity, and truthfulness. The primary principle of "first, do no harm" is emphasized. The fading of medical deontology in today's technical and litigious environment is lamented.