Differential Diagnosis in Clinical Medicine

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There are many ways to diagnose clinical problems. Sometimes, we do investigations which are not only costly but also painful experience. These tests and investigations do not add any new significant contribution towards diagnosis. There are simple and non-invasive tests. Similarly, we may order for latest investigative procedures only to find simple ailment. Most of the times, these ailments can be common and treatable without huge expenditure. I have taken care to be simple and easy diagnosis.
The book will be a source of information and will be useful in diagnosing the cases. Diagnosis is important for the doctor and relief of symptoms will be the expectation for the patients. It is more helpful to undergraduate and postgraduate students and practicing physicians. There are five chapters covering all the systems .
R Deenadayalan , MD (General Medicine) from Stanley Medical College and Hospital, Chennai, Tamil Nadu, India. He was a Professor of Medicine, Stanley Medical College and Hospital, Chennai, Tamil Nadu, India and Meenakshi Medical College, Hospital and Research Institute, Kancheepuram, Tamil Nadu, India. He has taught bedside medicine for 
undergraduate (MBBS) and postgraduate (MD, Gen Med) students. He has twenty years of teaching experience. He has been an examiner for internal medicine for both undergraduate and postgraduate examinations conducted by the Tamil Nadu Dr MGR Medical University, Chennai, India. He rendered service at village, taluk and district levels.

Foreword

Every book is meant to bring concept to those who care to read them. Books on medical subjects are vast in number and every author strives to fill a need that he himself has felt. Some authors achieve this objective, but others, their intentions though are genuine meander into a dreary desert of words.
Prof R Deenadayalan MD (Gen Med) has made a serious attempt in trying to help a hard pressed medical student by presenting him with a work based on two decades of experience superimposed on those of his teachers. Thus, a simple but a very useful glossary of differential diagnosis of clinical signs and entities has been created. Though this cannot replace a formal textbook, it will serve as a ready reckoner to the beleaguered medical student who labors under an ever increasing load of information and changing priorities.
The faculty of the Meenakshi University, I am sure, will find this contribution very useful and I am definite that they will recommend it to their students and colleagues. This book will be a bedside companion to students and staff alike.
Dr R Deenadayalan has a reputation as an excellent teacher of clinical medicine to both undergraduate and postgraduate medical students. In this era, where modern diagnostic facilities are easily available, clinical medicine has unfortunately taken a back seat. But medicine is not an exact science, as even with all the modern diagnostic facilities, diagnosis can be difficult. In many rural areas diagnostic facilities are not available and clinician has to rely only on clinical methods for diagnosis. It is, therefore, apt that Dr R Deenadayalan has written this book on Differential Diagnosis in Clinical Medicine which would be of immense benefit to undergraduates, postgraduates and clinicians to refer to a particular system and look for differential diagnosis. It should be remembered that clinical medicine is an art as well as science and one cannot replace clinical medicine even in this present era.
I congratulate Dr R Deenadayalan for the immense efforts to bring this book and wish him good luck in his endeavors.
I know Prof Dr R Deenadayalan for several years. He has put in a lot of efforts to bring out this concised book. The book is an expression of his teaching career and service to patients over a long period in various hospitals.
Medicine is both a science and an art, continuously changing and challenging. Obviously, it is too far vast a field to ever summarize in a textbook of any size. The tremendous developments in the field of medicine have increased the bulk of textbooks of medicine. A sincere attempt has been made to incorporate both the clinical methods and the critical aspects. Thus, this book is a handy one with adequate information. Despite the enormous information available in a number of textbooks or at the push of a key on computer, it is less frequently that the students or house officers are benefited by these. Hence, a ready reckoner like a book of this kind, will be of immense use to them.
This book has been designed to provide a rapid and thoughtful initial approach to medical problems seen by students and internees with greater frequency. Questions that frequently come from faculty to the house staff on rounds, have been anticipitated and important ways of arriving at diagnosis are presented. This approach will facilitate the evidence-based medicine discussions
that will follow the work up of the patient.
This well-conceived book should enhance the ability of every medical student to properly evaluate a patient in a precise timely fashion and to be stimulated to work the various possibilities in diagnosis.
I am sure that this book will prove to be a worthy addition to medical education, aiding in proper diagnosis and hence timely management. It will be useful throughout the arduous but incredibly rewarding journey of leaming medicine for students.
Dr R Deenadayalan has a reputation as an excellent teacher of clinical medicine to both undergraduate and postgraduate medical students. In this era, where modern diagnostic facilities are easily available, clinical medicine has unfortunately taken a back seat. But medicine is not an exact science, as even with all the modern diagnostic facilities, diagnosis can be difficult. In many rural areas diagnostic facilities are not available and clinician has to rely only on clinical methods for diagnosis. It is, therefore, apt that Dr R Deenadayalan has written this book on Differential Diagnosis in Clinical Medicine which would be of immense benefit to undergraduates, postgraduates and clinicians to refer to a particular system and look for differential diagnosis. It should be remembered that clinical medicine is an art as well as science and one cannot replace clinical medicine even in this present era.
I congratulate Dr R Deenadayalan for the immense efforts to bring this book and wish him good luck in his endeavors.
I know Prof Dr R Deenadayalan for several years. He has put in a lot of efforts to bring out this concised book. The book is an expression of his teaching career and service to patients over a long period in various hospitals.
Medicine is both a science and an art, continuously changing and challenging. Obviously, it is too far vast a field to ever summarize in a textbook of any size. The tremendous developments in the field of medicine have increased the bulk of textbooks of medicine. A sincere attempt has been made to incorporate both the clinical methods and the critical aspects. Thus, this book is a handy one with adequate information. Despite the enormous information available in a number of textbooks or at the push of a key on computer, it is less frequently that the students or house officers are benefited by these. Hence, a ready reckoner like a book of this kind, will be of immense use to them.
This book has been designed to provide a rapid and thoughtful initial approach to medical problems seen by students and internees with greater frequency. Questions that frequently come from faculty to the house staff on rounds, have been anticipitated and important ways of arriving at diagnosis are presented. This approach will facilitate the evidence-based medicine discussions
that will follow the work up of the patient.
This well-conceived book should enhance the ability of every medical student to properly evaluate a patient in a precise timely fashion and to be stimulated to work the various possibilities in diagnosis.
I am sure that this book will prove to be a worthy addition to medical education, aiding in proper diagnosis and hence timely management. It will be useful throughout the arduous but incredibly rewarding journey of leaming medicine for students.

Preface

Medicine is science. Practicing medicine is an art. When a doctor can make a proper history and physical examination, the correct diagnosis can be made. Because only after making a correct diagnosis, the physician can give a correct treatment. At time, patients may not bother about the diagnosis. The patients are mainly worried about relief of symptoms. To make a correct diagnosis, this book may be of some use.
In the book, the clinical usefulness is discussed. I have taken care, so that the book will be of some help for the undergraduates as well as postgraduates.
I have been teaching medicine nearly for two decades. So, I think that I can to some extent fulfill the needs of the students. There are so many books on clinical medicine, but, still this book also will fulfill the needs of a practicing doctor.
Suggestions to improve the book are welcome and it will be very much appreciated.
 

Acknowledgments

In preparing this book, I have taken the help of my Assistant Professors and other colleagues.
Prof S Shiva Kumar had been helping me in preparation of this book. I must thank him for his advice in preparing this book.
I must thank the stenographer Mr S Thanthoney for preparing the book.
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