It is sincerely hoped that both the students and teachers alike will find it useful and the present attempt will prove its worth. The additional salient features of the book are: The entire text has been thoroughly revised and updated. Specific learning objective i.e. must know areas of the study have also been added. More study questions have been added at the end of the each chapter. Many clinical pictures have been added for better understanding. Important issues have been highlighted by using italics and bold letters. This book contain 34 tables, 188 short answer questions and about 215 figure.