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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

Bullous Pemphigoid and Herpes Gestationis

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An inflammatory disease of older people; signs include widespread erythematous macules and patches, urticarial papules and plaques, and vesicles and bullae, the blisters often arising on urticarial plaques.

A Clinical Atlas of 101 Common Skin Diseases

Candidiasis

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An inflammatory disease caused by the yeast Candida albicans and manifested clinically as erythematous papules and pustules that may become confluent to form plaques in the case of the former and erosions in the case of the latter.

A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

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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 with other epithelial elements of adnexa in the case of cystic hamartomas.

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

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

Extramammary Paget’s Disease and Mammary Paget’s Disease

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Extramammary Paget’s disease is an apocrine carcinoma that begins within the epidermis and presents itself clinically as a patch or a subtle plaque that extends centrifugally for many years before becoming a readily discernible thick plaque, a finding that signifies involvement by the carcinoma of the dermis, too.

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

Hemangiomas, Vascular Malformations, and Ectasias

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An hemangioma is a benign neoplasm of blood vessels, a vascular malformation is an aberration in development of one or more major vascular structures, and an ectasia is a dilation of a preexisting end vessel.

A Clinical Atlas of 101 Common Skin Diseases

Herpes Simplex, Zoster, and Varicella

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Conditions caused by infection with different strains of herpesvirus and typified when fully developed by tense vesicles, herpes simplex consisting of grouped vesicles on an erythematous base, zoster being made up of vesicles, sometimes hemorrhagic ones, that course along a dermatome of an adult usually, and varicella being characterized by widespread discrete vesicles in children as a rule.

A Clinical Atlas of 101 Common Skin Diseases

Livedo Vasculitis and Livedo Reticularis

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A type of small-vessel vasculitis (venulitis) of the skin, occurring especially in the vicinity of the ankle, characterized at first by purpuric macules and patches that, in time, may become hemorrhagic blisters that ulcerate and heal with white, stellate scars (atrophie blanche).

A Clinical Atlas of 101 Common Skin Diseases

Melanocytic Nevi and Melanotic Macules

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Hamartomas (“congenital” melanocytic nevi) and benign neoplasms (“acquired” melanocytic nevi) of various specific types, all of which are composed of abnormal melanocytes and manifested clinically as lesions of different colors, shapes, and sizes, among them, macules and patches, papules and plaques, and nodules and tumors.

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

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

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

Sebaceous Gland Hyperplasia

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An enlargement of normal pre-existing sebaceous lobules on the face, the forehead, cheeks, and nose in particular, that results in lesions seen clinically to consist of a rim of yellow papules around a central dell that represents a dilated ostium of a follicle.

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

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

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

Allergic Contact Dermatitis

Allergic contact dermatitis is an inflammatory process induced by direct contact of the skin of a sensitized individual to an allergen. Within hours, red macules or patches develop that usually evolve rapidly, sometimes through an intermediate stage…

A Clinical Atlas of 101 Common Skin Diseases

Phototoxic Dermatitis

…applied topically or administered systemically in combination with the effects of ultraviolet light, the result being a caricature of sunburn. The lesions consist of erythema and blisters, some of which may be large bullae, and occur on sites expose…

A Clinical Atlas of 101 Common Skin Diseases

Nummular Dermatitis

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

Dyshidrotic Dermatitis

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. The name “dyshidrotic” is misleading; the condition has no relation whatever to eccrin…

A Clinical Atlas of 101 Common Skin Diseases

Seborrheic Dermatitis

…cess 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…

A Clinical Atlas of 101 Common Skin Diseases

Factitious Dermatitis

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…

A Clinical Atlas of 101 Common Skin Diseases

Persistent Pigmented Purpuric Dermatitis

…ocess, 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 Kapet…

A Clinical Atlas of 101 Common Skin Diseases

Dermatitis Herpetiformis

…n, 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 s…

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