This book describes cases in medical and pediatrics field in which physicians may encounter in daily practice. Case reports in our book were conducted in a broad range of medical field (medical acupuncture, internal medicine, pediatrics, sports medicine, physical, and rehabilitation, infectious disease, dermatology, and venereology, pulmonology, psychiatry, emergency, and critical care). We combined common and unusual but unique cases in daily practice, which readers will find very interesting. Chapters are divided by nine specific fields including medical acupuncture, internal medicine, sports medicine, physical, and rehabilitation, infectious disease, dermatology and venereology, pulmonology, psychiatry, emergency and critical care, and pediatrics. Our cases are original and might have unexpected presentations of a new and emerging disease. This book will expand knowledge in the field of medicine that is written by our best practitioners and specialists. This valuable bundle of 61 case reports provides access to the case (history, physical examination, and diagnostic tests including laboratory, imaging, and histopathological examination), differential diagnosis, treatment, and educational messages for suggested case solutions. Approach to the cases is explained step-by-step with clear explanations of theory and practice. Essential key learning points and references are included in every case to aid the physician to understand better about the disease and to improve the patient outcomes.