Fever and Rash
Fever and Rash OVERVIEW A fever is one sign of the body’s defense response. A fever occurs when a pyrogen, a toxin, or cytokine produced by an infectious agent, human…
Dermatology
Cutaneous Manifestations of HIV Infection
Cutaneous Manifestations of HIV Infection OVERVIEW The first organ that may be affected in human immunodeficiency virus (HIV) infection is the skin. Before the advent of highly active antiretroviral therapy…
Axillary and Inguinal Creases
Axillary and Inguinal Creases OVERVIEW The word “intertrigo” comes from the Latin, terere, to rub, a catch-all word for the more descriptive term “intertriginous dermatitis.” Thus, when used in its…
Oral Cavity
Oral Cavity OVERVIEW Lesions involving the mucous membranes of the oral cavity may be confined to the mouth, or they may be associated with widespread cutaneous entities, or with systemic…
Lips and Perioral Area
Lips and Perioral Area OVERVIEW The term cheilitis refers to inflammatory lesions involving the mucous membranes of the lips. Many disorders of mucous membranes (see also Oral Cavity), both inflammatory,…
Forehead and Temples
Forehead and Temples OVERVIEW Molluscum contagiosum, flat warts, acne vulgaris, rosacea, seborrheic dermatitis, and benign neoplasms, such as various nevi, tend to appear on the forehead and temples in children…
Cutaneous Manifestations of Pregnancy
Cutaneous Manifestations of Pregnancy OVERVIEW During pregnancy, hormonal shifts may result in physiologic alterations in the skin, hair, and nails. Many of these changes are seen so frequently, that they…
Generalized Eruptions
Generalized Eruptions OVERVIEW There are drug eruptions, viral and bacterial exanthems that can become widespread and occasionally life-threatening. Erythema multiforme major (Stevens-Johnson syndrome), toxic epidermal necrolysis, and exfoliative dermatitis (erythroderma)…
Cutaneous Manifestations of COVID-19
Cutaneous Manifestations of COVID-19 The 2020 SARS-CoV-2 pandemic has presented an urgent challenge for medical professionals and scientists to not only care for the very ill with COVID-19 infection, but…
Nose and Paranasal Area
Nose and Paranasal Area OVERVIEW The nose has two outstanding features—its prominence and its abundance of sebaceous glands—both of which make it, and its surrounding area, a site prone to…