INTRODUCTION TO CHAPTER Print Section Listen Although disorders of pigmentation are not life-threatening, their impact can be profound. Lack of pigment or excessive pigment is quickly noticed by others and…

INTRODUCTION TO CHAPTER Print Section Listen Melanocytic nevi (moles) are common benign skin tumors. In most people, these are primarily of cosmetic significance. However, nevi can occasionally become irritated or…

INTRODUCTION TO CHAPTER Print Section Listen Actinic keratoses (AKs) are one of the most common skin findings in dermatology. AKs are benign neoplasms of the epidermis and are considered precursor…

INTRODUCTION TO CHAPTER Print Section Listen Most superficial fungal infections of the skin are caused by dermatophytes or yeasts. They rarely cause serious illness, but fungal infections are often recurrent…

INTRODUCTION TO CHAPTER Print Section Listen Identification and classification of a patient’s skin lesions are important steps in the diagnosis of any skin disorder. The numerous descriptive terms used in…

INTRODUCTION TO CHAPTER Print Section Listen Urticaria and cutaneous adverse drug reactions are among the most common skin problems seen in the clinic and hospital. They can be associated with…

INTRODUCTION TO CHAPTER Print Section Listen Acne and related pilosebaceous disorders rarely cause serious systemic problems, but they are among the diseases that can cause significant psychosocial distress. Most of…

INTRODUCTION TO CHAPTER Print Section Listen Arthropods have always feasted on humans and humans have tried countless strategies to keep them from doing so. The societal burden of biting and…

INTRODUCTION TO CHAPTER Print Section Listen Dermatitis (eczema) refers to a heterogeneous group of disorders that share similarities in clinical appearance and histopathologic findings, but may have very different etiologies….

INTRODUCTION TO CHAPTER Print Section Listen Psoriasis, seborrheic dermatitis, pityriasis rosea, and lichen planus are diseases that present with papulosquamous lesions (scaly papules and plaques). Although these diseases may have…