Granuloma Annulare Elyse M. Love Evan Rieder BACKGROUND Granuloma annulare (GA) is a common noninfectious, inflammatory condition that results from focal degeneration of elastic fibers. Two-thirds of patients are less…

Lichen Planus Elyse M. Love Evan Rieder BACKGROUND Lichen planus (LP) is an idiopathic inflammatory condition that may affect the skin, mucosa, nails, and/or the scalp. Mucosal involvement may include…

Pigmented Neoplasms and Nevi Ka Yee Kung Henry Hin Lee Chan BACKGROUND Pigmented neoplasms and nevi are common dermatological conditions that dermatologists encounter frequently in daily practice. Although some patients…

Psoriasis Lauren Fried Gabriela A. Cobos David Cohen BACKGROUND Psoriasis is a chronic immune-mediated inflammatory disorder characterized by hyperproliferation of keratinocytes leading to epidermal hyperplasia, scaling, and inflammation. The prevalence…

Basal Cell Carcinoma Elise Ng Arielle Kauvar BACKGROUND Basal cell carcinoma (BCC) is the most prevalent malignant tumor of the skin. It is seen most often in fair-skinned middle-aged to…

Squamous Cell Carcinoma of the Skin Ron R. Allison BACKGROUND Cutaneous squamous cell carcinoma (SCC) is extremely common and fortunately highly curable. As these lesions have a propensity for development…

Atopic Dermatitis Lauren Fried Gabriela A. Cobos David Cohen BACKGROUND Atopic dermatitis (AD) is a chronic and relapsing condition associated with pruritus and inflammation. The pathophysiology of AD is complex…

Hypertrophic Scars and Keloids Jill S. Waibel Ashley Rudnick BACKGROUND After injury a dynamic process of tissue regeneration occurs, which consists of 3 wound healing phases, including inflammatory phase, proliferative…

Dermatofibromas Lauren L. Levy Amanda Zubek Macrene Alexiades BACKGROUND Dermatofibromas (DFs), also called benign fibrous histiocytomas, are benign connective tissue neoplasms that have a predilection for the lower extremities. DFs…

Neurofibromas Lauren L. Levy Amanda Zubek Macrene Alexiades BACKGROUND Neurofibromas (NFs) are benign nerve sheath tumors. Solitary cutaneous neurofibromas are commonly found in adults and are usually not associated with…