The largest sensory organ of the human body, the skin stretches over an average of eighteen square feet and weighs between six and nine pounds. This revised and expanded edition of Skin Deep (Facts On File, 1996) reveals how the skin functions and how to take care of it in a clearly written, jargon-free survey. Written by an accomplished medical writer and a dermatologist, The Encyclopedia of Skin and Skin Disorders, Second Edition includes hundreds of well researched entries on everything from elements of the skin and their roles in the human anatomy to cosmetics, medications, and preventive care. This reference also examines the histories of skin disorders, skin traumas, their symptoms, and treatments.