The book provides comprehensive information highlighting recent developments in the field of dermatology. Several distinct skin diseases are inherited as Mendelian inheritance. The cause of genetic skin disorders is mutations in the genes encoding proteins expressing in skin, melanocytes, skin appendages and immune-related cells. Recognition of genes and explanation of function of the encoded proteins may provide latest techniques to tackle the disorders. The aim of this book is to provide latest information regarding every disorder to physicians, dermatologists and scientists, and offer new therapies to affected individuals.