This book summarises all unusual diseases that are rare in society. It clearly explains the causes, symptoms, prevention of disease. I am a biotechnology student I eagerly want to know about uncommon diseases. This book is not less than a blessing for people who want to perceive the knowledge about diseases. By reading this book I clearly comprehended the diseases and really enjoyed it. The way of using terms related to diseases is appreciable. It's very interesting for me. So, I give it 4 stars.