Ultraviolet Light Reactions
Ultraviolet Light Reactions My-Linh T. Nguyen Sunburn is acute inflammation of the skin in response to ultraviolet (UV) damage. Its characteristic erythema and pain are well known to many patients….
Papulosquamous Diseases
Papulosquamous Diseases Susan J. Huang Arturo Saavedra-Lauzon Papulosquamous disorders are a varied group of conditions, all sharing the common morphologic feature of scaling papules and plaques. Psoriasis is one of…
Dermatitis
Dermatitis Lilla Landeck Lynn Baden Among industrialized countries, dermatitis (synonym: eczema) is one of the most frequent dermatologic diagnoses presenting for treatment. By definition, the term dermatitis describes a noncontagious…
Benign Neoplasms
Benign Neoplasms Juliana L. Basko-Plluska Neoplasms of the skin are derived from proliferation of the different types of cells residing in the epidermis, dermis, or subcutaneous tissue. Epidermal growths are…
Dermatoses of Pregnancy
Dermatoses of Pregnancy Katrina Abuabara Ellen K. Roh Skin changes during pregnancy are common and range from physiologic changes to specific dermatoses of pregnancy. Some are well-defined conditions, such as…
Viral Infections of the Skin
Viral Infections of the Skin Jennifer K. Tan-Billet Andrew A. Nelson Viruses cause a myriad of skin conditions, ranging from benign nonspecific morbilliform eruptions to potentially life-threatening disseminated disease. With…
Pigmentary Disorders
Pigmentary Disorders Vinod E. Nambudiri Much like the height and weight of individuals, the spectrum of skin pigmentation is a continuous, fluid distribution of hues. The pigment-containing cells of the…
Premalignant and Malignant Skin Lesions
Premalignant and Malignant Skin Lesions Thanh-Nga T. Tran Squamous cell carcinoma (SCC), basal cell carcinoma (BCC), melanoma, and Merkel cell carcinoma (MCC) are among the most common cutaneous malignancies encountered…
Dermatologic Reactions to Arthropods
Dermatologic Reactions to Arthropods James Y.T. Wang While skin pathology can impact the appearance and health of the skin, external influences also cause important changes in the skin. In this…
Acne and Related Disorders
Acne and Related Disorders Jennifer Villaseñor Daniela Kroshinsky The chapter is divided into five sections: acne vulgaris, acne rosacea, hidradenitis suppurativa and the follicular occlusion tetrad, perioral dermatitis, and acne…
