This issue of the Medical Clinics of North America brings the practicing clinician up to date on diagnosis and treatment of dermatologic conditions he may encounter in his daily practice. Guest Edited by preeminent dermatologist, Neil Sadick, this issue covers topics including psoriasis, rosacea, acne, Cutaneous manifestation of systemic diseases, Cutaneous markers of malignancy, diseases of the hair and nails, vasculity, allergic disorders, eczema, urticaria, infectious diseases, skin neoplasms, Cutaneous manifestations of venous disease, and disorders of pigmentation.