Abstract Pathologic reactions of the skin to light can arise from multiple etiologies including: immunologic photodermatoses, e.g. polymorphous light eruption, solar urticaria, actinic prurigo, hydroa vacciniforme, and chronic actinic dermatitis;…
Abstract Protozoal and helminth infections are major causes of tropical disease in many parts of the world. For some of the conditions, the clinical presentations differ depending on the geographic…
Abstract Physical, psychological, and sexual abuse may occur in any cultural environment. Although abuse is not limited to particular age groups, this chapter focuses on abuse and neglect inflicted upon…
Abstract This chapter covers the histiocytoses with emphasis on Langerhans cell histiocytosis (LCH) and many of the disorders comprising the large group of diseases referred to as non-Langerhans cell histiocytoses…
Abstract Every day, more than 1 million people worldwide are newly infected with sexually transmitted infections (STIs), leading not just to an increase in morbidity and mortality, but also a…
Abstract Infestations occur worldwide and are frequently encountered in the practice of dermatology. The most common human infestations, scabies and head lice, are pruritic conditions caused by host-specific mites living…
Abstract Drug abuse is a global problem and is directly responsible for minor to serious and fatal illnesses and injuries, as well as adverse sociologic consequences. It is estimated that…
Abstract Viral infections frequently present with cutaneous manifestations, especially in children. Both viral exanthems and enanthems have a broad range of clinical findings, which may be distinctive or nonspecific. This…
Abstract The human herpesvirus family is composed of eight distinct viruses that cause infections with a wide spectrum of clinical features, including characteristic cutaneous manifestations. The pathogenesis of herpesvirus infections…
Abstract Bacterial infections commonly affect the skin and account for ~20% of outpatient dermatology visits. Staphylococci and streptococci cause the majority of bacterial skin conditions, which range from common infections…
