This third edition of the book Case History and Data Interpretation in Medical Practice is designed with presentation of many common and uncommon medical scenarios day-to-day practice. With advancement of knowledge and new invention, author have also added new cases, new data, and latest information as far as possible and added many new photographs. In the answer part, a detail description of the disease is provided, so that the reader can gain basic information of the specific disease, even without going through a voluminous textbook. The skills needed to be competent clinician can only be mastered by thinking and exercising the brain, which are the essential part applied in this book.