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A Clinical Atlas of 101 Common Skin Diseases

Allergic Contact Dermatitis

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Allergic contact dermatitis is an inflammatory process induced by direct contact of the skin of a sensitized individual to an allergen.

A Clinical Atlas of 101 Common Skin Diseases

Chondrodermatitis Nodularis Helicis

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A papule, sometimes eroded, ulcerated, crusted, or keratotic, on a helix or antehelix consequent to the effects of persistent trauma.

A Clinical Atlas of 101 Common Skin Diseases

Deep Fungal Infections

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Cutaneous and subcutaneous lesions, usually nodules, that have become keratotic, crusted, and ulcerated as a consequence of infection by a variety of deep fungi, i.e., fungi situated in the dermis and subcutis, some of which may be disseminated to other organs.

A Clinical Atlas of 101 Common Skin Diseases

Dermatitis Herpetiformis

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An inflammatory process characterized by symmetrical distribution, especially on the skin of the scalp, overlying the scapulae and the sacrum, on the buttocks, and on the extensor surface of the extremities, of clusters of urticarial papules, papulovesicles, and vesicles that are so intensely pruritic that they soon are scratched away, leaving in the wake erosions, ulcers, hemorrhagic crusts, and eventually pigmented macules and scars.

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

Dermatomyositis

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An inflammatory disease of children and adults that tends to involve skin and skeletal muscle mostly, the findings in the skin being patches with the color of heliotrope, especially in the periocular region.

A Clinical Atlas of 101 Common Skin Diseases

Dermatophytosis

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An inflammatory process caused by superficial fungi, i.e., fungi situated superficially in the cornified layer and in other cornified structures, and expressed clinically as smooth-surfaced papules, scaly papules, scaly plaques, nodules, pustules, vesicles, and bullae.

A Clinical Atlas of 101 Common Skin Diseases

Dyshidrotic Dermatitis

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A pruritic papular and vesicular inflammatory process of unknown cause that tends to affect the sides of fingers and toes, as well as palms and soles.

A Clinical Atlas of 101 Common Skin Diseases

Epidermal Nevi

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Epidermal nevi are hamartomas in which the epidermis is abnormal, being hyperkeratotic, and in which lesions are aligned along Blaschko’s lines.

A Clinical Atlas of 101 Common Skin Diseases

Epidermolysis Bullosa

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A constellation of unrelated blistering diseases, many of them determined genetically but some of them not, that involve skin and sometimes mucous membranes, the blisters often developing after trauma and sometimes resulting in scarring and deformity.

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

Factitious Dermatitis

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Dermatitis (and/or panniculitis) induced artificially and deliberately by a patient and characterized clinically by findings unlike those of any "authentic" disease, for example, by lesions that have sharply angulated margins, lesions that are artificially linear, and ulcers that have a punched-out appearance, all of these changes occurring on sites that are within easy reach of manipulating hands.

A Clinical Atlas of 101 Common Skin Diseases

Keratosis Pilaris/Lichen Spinulosus

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Keratotic spikes that emerge from dilated ostia of infundibula and are equidistant from one another.

A Clinical Atlas of 101 Common Skin Diseases

Lichen Nitidus

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A granulomatous inflammatory process characterized clinically by closely-set, tiny, hypopigmented papules that have a predilection for the trunk, dorsa of the hands and sides of the finger, and the penis of children and young adults especially.

A Clinical Atlas of 101 Common Skin Diseases

Lichen Planus

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An inflammatory process consisting usually of violaceous papules that have a polygonal outline and flat top, and that tends to favor flexural surfaces of skin and the buccal mucosa of the oral cavity.

A Clinical Atlas of 101 Common Skin Diseases

Lichen Striatus

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An inflammatory process that expresses itself as a cluster of closely-set smooth or scaly papules in linear array along the lines of Blaschko, and that usually resolves in months.

A Clinical Atlas of 101 Common Skin Diseases

Mycosis Fungoides

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A systemic lymphoma of T-lymphocytes that manifests itself first in the skin as macules and then patches that often are scaly.

A Clinical Atlas of 101 Common Skin Diseases

Nummular Dermatitis

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An inflammatory process of unknown cause consisting of pruritic coin-shaped lesions of different sizes and made up of vesicles that soon are scratched away, leaving erosions, ulcerations, and crusts as residua.

A Clinical Atlas of 101 Common Skin Diseases

Palmar and Plantar Keratoderma

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

A Clinical Atlas of 101 Common Skin Diseases

Persistent Pigmented Purpuric Dermatitis

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An inflammatory process, but not a vasculitis, that involves the legs especially with purpuric macules and subtle papules (Schamberg’s disease), lichenoid papules (lichenoid purpura of Gougerot-Blum), and scaly papules (eczematid-like purpura of Doucas and Kapetanakis), all of which seem to be variants of the same basic pathologic process.

A Clinical Atlas of 101 Common Skin Diseases

Phototoxic Dermatitis

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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.

A Clinical Atlas of 101 Common Skin Diseases

Pyoderma Gangrenosum

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An inflammatory process that often begins as a suppurative folliculitis manifested clinically as pustules.

A Clinical Atlas of 101 Common Skin Diseases

Pyogenic Granuloma

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A red, often ulcerated, boggy papule that represents a hyperplasia of small cutaneous vessels which are "fed" by an arteriole in the subcutaneous fat, the lesion resulting consistently from external trauma, usually in the form of a puncture or a yank of a "hang nail." In time, the proliferation of vessels ceases, there is progressive fibroplasia, and the then gray or white papule shrinks and eventually disappears.

A Clinical Atlas of 101 Common Skin Diseases

Scars, Keloids, and Anetodermas

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A type of fibrosing inflammation characterized clinically by lesions that at first are elevated and that do not extend beyond the exact site of injury and that in time tend to shrink, sometimes even becoming atrophic.

A Clinical Atlas of 101 Common Skin Diseases

Anetoderma

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The end-stage of an inflammatory or neoplastic process in which there is loss of collagen and elastic tissue in the mid-reticular dermis with consequent formation of lesions that protrude in dome-like fashion above the skin surface and that can be herniated below the skin surface.

A Clinical Atlas of 101 Common Skin Diseases

Sclerodermas

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A generic term for at least two different inflammatory diseases that have in common hardening of the skin by virtue of thickening of bundles of collagen in the dermis and subcutis.

A Clinical Atlas of 101 Common Skin Diseases

Seborrheic Dermatitis

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An inflammatory process that consists of tiny papules covered by prominent scales and localized typically to the “seborrheic region,” namely, scalp, forehead, eyebrows, malar eminences, paranasal and nasolabial folds, and retroauricular zone, and sometimes the chest and axillary vault.

A Clinical Atlas of 101 Common Skin Diseases

Seborrheic Keratosis, Including Solar Lentigo

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A benign neoplasm of keratinocytes that consists of pigmented macules, papules, and plaques distributed on sun-exposed sites for a solar lentigo and the reticulated type of seborrheic keratosis, which represents a later stage of solar lentigo, and on the trunk mostly for other types of seborrheic keratosis unrelated to solar lentigo.

A Clinical Atlas of 101 Common Skin Diseases

Stasis Changes and Venous Ulcers

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Alterations in the skin and subcutaneous fat, such as pigmentation and induration, secondary to the effects of long-term stasis, and ulcers that occur on the lower part of the legs as a consequence of the effects, combined, of incompetent valves of veins and thrombosis within veins situated deep.

A Clinical Atlas of 101 Common Skin Diseases

Urticaria Pigmentosa

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A benign neoplastic process of mast cells.

A Clinical Atlas of 101 Common Skin Diseases

Sclerodermas

A generic term for at least two different inflammatory diseases that have in common hardening of the skin by virtue of thickening of bundles of collagen in the dermis and subcutis. One of those diseases manifests itself as localized or widespread pa…

A Clinical Atlas of 101 Common Skin Diseases

Porphyria Cutanea Tarda

A disease manifested chiefly in the skin by vesicles and bullae that appear on sites of trauma, especially the face and dorsa of the hands, often in conjunction with macular hyperpigmentation and hypertrichosis of a face and sclerodermoid changes on…

Therapeutic Strategies in Dermatology

Eosinophilic Fasciitis: Overview

…rent. Refractory cases of eosinophilic fasciitis may represent morphea profunda. Inadequate (too superficial) biopsy may lead to the wrong diagnosis. Side effects of systemic steroids may be encountered and should be minimized if possible. Cimetidine…

Therapeutic Strategies in Dermatology

Keloids and Hypertrophic Scars: Initial Evaluation

Initial Evaluation Hypertrophic scars Keloids Differential diagnosis Morphea Lichen sclerosus et atrophicus (note genital and extragenital locations) Dermatofibrosarcoma protuberans…

Differential Diagnosis in Dermatopathology

Morphea, late stage vs. Collagenous nevus

A disease manifested chiefly in the skin by vesicles and bullae that appear on sites of trauma, especially the face and dorsa of the hands, often in conjunction with macular hyperpigmentation and hypertrichosis of a face and sclerodermoid changes on…

Differential Diagnosis in Dermatopathology

Lichen sclerosus et atrophicus vs. Superficial morphea

A disease manifested chiefly in the skin by vesicles and bullae that appear on sites of trauma, especially the face and dorsa of the hands, often in conjunction with macular hyperpigmentation and hypertrichosis of a face and sclerodermoid changes on…

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