The authors utilized the National Ambulatory Medical Care Survey to determine the 20 most common skin disorders seen in primary care practice. These disorders account for 80% of visits to primary care physicians for skin diseases, and for 5% to 10% of visits to primary care physicians overall. Given this large number of visits to primary care providers for the treatment of skin disorders, and given the fact that the treatment of even the most common skin disorders can at times be difficult, this book fills a specific niche for its targeted audience.