Dermato(patho)logists nowadays greatly rely on the progress of immunohistochemistry, both at the light and electronmicroscopic level. Immunohistochemical techniques not only represnt a major diagnostic tool, but they also substantially contribute to our understanding of the aetiopathogenesis of skin diseases. This book, compiled by an international panel of expert dermatologists represents a concise, yet comprehensive, compendium highlighting the diagnostic and pathogenetic contributions of immunohistochmistry in dermatology.