Diarrhea is the condition characterized by atleast three liquid or loose bowel movements each day. It typically lasts for a few days and can result in dehydration owing to fluid loss. Diarrhea is of three types- short duration bloody diarrhea, short duration watery diarrhea and persistent diarrhea. Irritable behavior and loss of the normal stretchiness of the skin are common signs of the disease. If it becomes severe, it can result in decreased urination, fast heart rate, loss of skin color and decrease in responsiveness. The underlying cause of the disease can be attributed to an infection of the intestines. Lactose intolerance, non-celiac gluten sensitivity, irritable bowel syndrome, celiac disease, hyperthyroidism, bile acid diarrhea, etc. are other causes of diarrhea. Oral rehydration solution and zinc tablets are ideal treatment strategies for diarrhea. This book is a comprehensive clinical guide to diarrhea. The topics included herein are of utmost significance and bound to provide incredible insights to readers. This book is appropriate for students seeking detailed information on this medical condition as well as for experts.