Written by experts in the dermatology field, this new fourth edition of Moderate-to-Severe Psoriasis discusses the current use of biologics and other pharmacologic and phototherapy treatments for moderate-to-severe psoriasis. Illustrated with high quality color figures, this standalone text emphasizes safe and effective treatments for the psoriasis patient that are perfect for the dermatologist in daily practice. New to this edition are chapters on day treatment programs, new agents, erythrodermic and pustular psoriasis, special populations, and pharmacogenetics.