Rare Common Diseases: Early Detection, Misdiagnosis, and the Art of Differentiated Diagnostics Practical Handbook for Patients, Volume 1

Fatigue with no apparent cause. Shortness of breath despite normal heart ultrasound results. Pain without signs of inflammation. Concentration problems with "normal" lab results. Many people experience exactly this-and yet remain without a clear diagnosis. These are often not rare diseases in the classic sense, but common diseases in early, atypical, or masked forms. This book is dedicated to a phenomenon that has received little attention to date: "rare common diseases." It shows why even widespread diseases such as diabetes, thyroid disorders, heart failure, autoimmune diseases, or autonomic dysregulation can remain undiagnosed for a long time in individual cases. In a way that is both understandable and scientifically sound, it explains how diagnostics actually work, where their limits lie, and which structural factors contribute to misjudgments. This is not about alarmism or self-diagnosis. It is about differentiated attention. Readers learn how to observe symptoms meaningfully, prepare better for doctor's appointments, and distinguish between justified concern and unnecessary fear. "Rare Common Diseases" is a book for anyone who wants to understand medical contexts-well-founded, critical, and forward-looking. Because modern medicine is not just about high-tech diagnostics, but above all about one thing: the ability to take individual characteristics seriously. Bremen University Press has published over 5,500 specialist books since 2005. This book is available in German, English, French, Spanish, and Italian. February 2026