Search Results for: ground substance

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Histologic Diagnosis of Inflammatory Skin Diseases

Ground Substance

…lar and cellular components of the body, including those of the dermis, binds water, and provides hydration to the skin. The ground substance of normal skin consists mainly of water, electrolytes, plasma proteins, and mucopolysaccharides. A…

Therapeutic Strategies in Dermatology

Stings: Key Points

…only associated with anaphylactic reactions. Different hymenoptera members have distinct stinging patterns. Most nest in the ground or in walls and sting only if provoked, with the exception of Africanized bees. Honeybees typically leave a barbed…

Therapeutic Strategies in Dermatology

Photosensitivity Dermatoses: Overview

…ive eczema, actinic reticuloid and persistent light reaction). Photosensitivity dermatoses are caused either by an exogenous substance (either topical or systemic), or are idiopathic. These conditions initially present on sun-exposed skin, may be…

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

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…

A Clinical Atlas of 101 Common Skin Diseases

Preface

…ous dermatitis. In this volume we have set out to produce an atlas of dermatology that is a work of art as well as a work of substance. 2. Nearly all contemporary atlases devoted to dermatology have portrayed particular skin diseases in but very few…

A Clinical Atlas of 101 Common Skin Diseases

Dermatofibrosarcoma Protuberans

The term, dermatofibrosarcoma protuberans (DFSP), was coined by Hoffman in 1925 to signify a protuberant, often multinodular cutaneous tumor that showed progressive growth. Darier and Ferrand had described a case of the disease a year before, and…

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…

A Clinical Atlas of 101 Common Skin Diseases

Tinea Versicolor

An inflammatory disease caused by the fungus Malassezia furfur, the organisms of which proliferate in a slightly thickened stratum corneum. It manifests clinically as white or light brown macules that may be discrete or confluent, on the trunk…

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,…

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