This book consists of twenty-one types including one hundred models. It follows the teaching material standard for higher and middle medical universities according to the ministry of health (including dermatitis, eczema, drug-induced eczema, virus skin disease, physical skin disease and dermatoma). Digital-camera pictures and colorful printing as well as English and Chinese versions are all presented. The performance and usage of externally applied drugs are also given. It is for middle and junior college students.