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A Clinical Atlas of 101 Common Skin Diseases

Dermatofibroma

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An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous inflammation, and fibrosis.

A Clinical Atlas of 101 Common Skin Diseases

Dermatofibrosarcoma Protuberans

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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 Clinical Atlas of 101 Common Skin Diseases

Erythema Annulare Centrifugum

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An inflammatory disease characterized by lesions with arcuate, annular, and serpiginous outlines and by collarettes of scale on the inner margin of lesions that extend outward in centrifugal fashion, disappearing in months as a rule in the absence of treatment.

A Clinical Atlas of 101 Common Skin Diseases

Erythema Multiforme

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An inflammatory process that tends to involve mucous membranes, as well as skin, and of the latter the acra especially.

A Clinical Atlas of 101 Common Skin Diseases

Erythema Nodosum

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An inflammatory process, i.e., a panniculitis, marked by tender erythematous plaques, nodules, or tumors (or combinations thereof) that usually affect the anterior aspect of the legs and, less often, the arms, and induced by processes, in an organ other than the skin, as dissimilar as sarcoidosis, Crohn’s disease, and histoplasmosis.

A Clinical Atlas of 101 Common Skin Diseases

Lupus Erythematosus

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An inflammatory process that expresses itself in the skin in protean ways that are variations on a basic pathologic theme, and includes evanescent patches on the face (“butterfly blush”), scaly papules and plaques that resolve with atrophy and hyperpigmentation (classic discoid lupus erythematosus), arcuate, annular, and serpiginous lesions (subacute cutaneous lupus erythematosus), nonscaling plaques (tumid lupus erythematosus), subcutaneous nodules (lupus profundus), and blisters (bullous lupus erythematosus).

A Clinical Atlas of 101 Common Skin Diseases

Neurofibromatosis

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A constellation of lesions that represent disorders of melanocytes (e.g., axillary "freckles" and café au lait "spots") and of proliferations of Schwann cells (e.g., papules, nodules, and tumors of neurofibroma).

A Clinical Atlas of 101 Common Skin Diseases

Pruritic Urticarial Papules and Plaques of Pregnancy

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An inflammatory process in pregnant women near term that consists of urticarial papules and plaques, especially on the trunk and particularly in association with lesions of striae atrophicantes, the lesions disappearing shortly after parturition.

A Clinical Atlas of 101 Common Skin Diseases

Viral Exanthems

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An inflammatory process manifested by a transient, usually widespread eruption, made up typically of macules and papules, and episodically of vesicles and pustules.

Therapeutic Strategies in Dermatology

Alopecia: Key Points

Key Points Alopecia, or hair loss, has a broad spectrum of causes. In order to appropriately treat alopecia, the type of hair loss or pathophysiology must be clearly identified. The evaluation for hair loss requires a very thorough history and phys…

Therapeutic Strategies in Dermatology

Folliculitis (including pseudofolliculitis barbae): Key Points

…llenging condition in which a chronic folliculitis develops in hair-bearing areas. A combination of alternative epilation, topical corticosteroids, keratolytics, and laser hair removal (where available) is the first-line therapeutic strategy. Introd…

Therapeutic Strategies in Dermatology

Alopecia: Clinical Cases

…ses Case 1 8-year-old healthy girl with a two-year history of hair loss Irregular, jagged and scattered patches of hair loss on the scalp; no eyelashes Parents note that hair loss started when the family moved to a new state and describe a diffic…

Therapeutic Strategies in Dermatology

Alopecia: Treatment

Treatment First-line treatment strongly depends on the type of hair loss. Specific pharmacologic treatments are discussed below for the two most common causes of alopecia: androgenetic alopecia and alopecia areata. Ancillary therapy In all cases…

Therapeutic Strategies in Dermatology

Pediculosis (Lice): Treatment

Treatment First-line therapy: The first-line therapy for pediculosis depends on the type of infestation. In general, removal of the lice and nits from the clothing (body lice) or hair (hair or pubic lice) is the priority of treatment. Body lice Al…

Therapeutic Strategies in Dermatology

Pediculosis (Lice): Initial Evaluation

…this image) or maculae ceruleans (slate-blue macules) on areas of skin that come in contact with the hair. The eggs of head lice are highly monomorphous ovoid structures that are firmly attached to the hair shaft via a white concretion such that t…

Therapeutic Strategies in Dermatology

Leishmaniasis: Overview

…gs, or biopsy. Response to therapy is significantly related to the causative species and geographic area in which the infection was acquired. Leishmaniasis occurs in three forms: cutaneous, mucocutaneous, and visceral. Only the therapy of cutaneous l…

Therapeutic Strategies in Dermatology

Superficial Fungal Infections: Therapy: Tinea capitis

Therapy: Tinea capitis Tinea capitis is superficial fungal infection of the scalp and hair It is mainly caused by any pathogenic dermatophyte except E. floccosum and T. concentricum The most common cause worldwide is M. canis, whereas in the USA i…

Therapeutic Strategies in Dermatology

Folliculitis (including pseudofolliculitis barbae): Treatment

…ibiotic therapy will result in permanent clearing in about 80% of patients. Pseudofolliculitis barbae (PFB) First-line therapy: The first-line therapy for PFB is to devise a strategy for alternative hair epilation, if possible. A combination of topi…

A Clinical Atlas of 101 Common Skin Diseases

Alopecias

Loss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that be…

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