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Therapeutic Strategies in Dermatology

Palmar and Plantar Keratoderma: Overview

Overview Palmoplantar keratodermas (PPK) can occur as a primary, inherited disorder of the volar surfaces, or as part of a generalized disorder, such as psoriasis, cutaneous T-cell lymphoma, or ichthyosis. Discussion of treatment here is limited to…

A Clinical Atlas of 101 Common Skin Diseases

Verrucae

Papules on skin and mucous membranes that result from infection of keratinocytes by different types of papillomavirus and classified according to their silhouettes, to wit, papillated (verrucae vulgares on different sites such as volar skin, i.e., v…

A Clinical Atlas of 101 Common Skin Diseases

Palmar and Plantar Keratoderma

A keratotic condition of the palms and soles, inherited usually, but sometimes acquired, in which involvement may be diffuse, circumscribed (including striate), or punctate….

Histologic Diagnosis of Inflammatory Skin Diseases

Nail Units

…d is a narrow zone of skin, the hyponychium, which merges with volar skin of the tip of a digit. The hyponychium is separated from overt volar skin by a distal groove, a slightly elevated margin against which the free edge of the nail tends to abut….

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…y histiocytes in nodules throughout the dermis and subcutis of volar skin or skin near it = Xanthoma tendinosum and tuberosum + Midreticular dermis of volar skin involved = Xanthoma, plane + Foamy histiocytes, some multinucleate, in palisaded arr…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

See Figs. 5.16 A&B, 5.17 A&B, 5.18 A&B, 5.19 A&B, 5.20 A&B, 5.21 A&B, and 5.22 A&B Figure 5.16 A. Perivascular dermatitis, perivascular only, superficial. B. Perivascular dermatitis, perivascular only, superficial and…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Vesicular Dermatitis

See Fig. 5.239 A-C. Figure 5.239 A-C. Patterns of vesiculation: intraepidermal, subepidermal, and intra- and subepidermal. “Blister” and “vesiculobullous” are terms generic for lesions of the skin that usually are elevated…

Histologic Diagnosis of Inflammatory Skin Diseases

Tinea nigra

Tinea nigra Synonyms Tinea nigra palmaris Keratomycosis nigricans palmaris Pityriasis nigra Carate noir Montoyola nigra Presentation stereotypical Age and sex Young persons especially and of both sexes Distribution of lesions Volar skin, a palm most…

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