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Histologic Diagnosis of Inflammatory Skin Diseases

Ground Substance

Ground substance (extrafibrillar matrix) is finely granular extracellular material that enmeshes fibrillar and cellular components of the body, including those of the dermis, binds water, and provides hydration to the skin. The ground substance of n…

Therapeutic Strategies in Dermatology

Stings: Key Points

Key Points The order hymenoptera includes bees, wasps, hornets, and ants. Hymenoptera stings cause toxic and allergic reactions that present across a broad clinical spectrum: from mild, localized reactions to severe, systemic, and potentially fatal…

Therapeutic Strategies in Dermatology

Photosensitivity Dermatoses: Overview

Photosensitive drug eruptions, polymorphous light eruption, chronic actinic dermatitis (CAD -includes the conditions previously called photosensitive eczema, actinic reticuloid and persistent light reaction). Photosensitivity dermatoses are caused e…

A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

A Clinical Atlas of 101 Common Skin Diseases

Phototoxic Dermatitis

An inflammatory process that represents the combined effects of a toxic substance applied topically or administered systemically in combination with the effects of ultraviolet light, the result being a caricature of sunburn. The lesions consist of e…

A Clinical Atlas of 101 Common Skin Diseases

Preface

What prompted the undertaking of this pocket atlas of dermatology? The reasons were several and varied, among them the following: 1. ¬†Pictures are and always have been an extraordinarily valuable vehicle in the study of clinical dermatology. The fir…

A Clinical Atlas of 101 Common Skin Diseases

Photoallergic Dermatitis and Phototoxic Dermatitis

An inflammatory process that results from either topical or systemic sensitization coupled with the effects of ultraviolet light. The lesions, all of which occur in photodistribution, are macules, papules, and blisters that resolve with crusts….

A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

A Clinical Atlas of 101 Common Skin Diseases

Dermatofibrosarcoma Protuberans

A malignant nonepithelial neoplasm (a sarcoma) presumably of perineural fibrocytes that presents itself usually on the trunk, but sometimes elsewhere, such as the extremities, face, and scalp. A papule of it tends to become a plaque, a nodule, a tum…

A Clinical Atlas of 101 Common Skin Diseases

Melanoma

A malignant neoplasm of melanocytes that, in the skin, begins as a macule and may become a patch or a papule. A flat lesion of melanoma tends to be asymmetrical, poorly circumscribed with a scalloped, jagged, or notched border, and variegate, mostly…

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