FOREWORD<br > Dr. Perry Robins is President of The Skin Cancer<br >Foundation and an experienced dermatologic surgeon who<br >has pioneered the Mohs micrographic surgical technique<br >for the treatment of cancers of the skin. In this book he<br >explains in layman s terms the devastating effects that<br >radiation from the sun can produce in the skin.<br > While the emphasis of this book is on precancers and<br >cancers of the skin， it also delves into other important<br >consequences of too much exposure to the sun， namely，<br >photosensitive skin diseases and "photoaging." Photoaging is<br >a combination of blotchy discolorations of the skin， wrinkling，<br >and sagging tissues， all of which combine to produce<br >prematurely "aged" skin.<br > The fundamental message from Dr. Robins is that the<br >down side of exposure to solar radiation can be prevented<br >