Small, Scaly Lesions

Mar 5, 2017 by in Dermatology Comments Off on Small, Scaly Lesions

Fig. 5.1 Guttate psoriasis. Lesions in (A) developed after a sunburn (Koebner phenomenon). A, Courtesy, Ronald Rapini, MD. A, From Bolognia JL, Jorizzo JL, Schaffer JV. Dermatology, 3e. London: Saunders, 2012, with permission….

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Epidermal Injury/Necrosis

Mar 5, 2017 by in Dermatology Comments Off on Epidermal Injury/Necrosis

Fig. 8.1 Early epidermal necrosis. Staphylococcal scalded skin syndrome (A,B) and calciphylaxis (C,D; thrombosed dermal vessels above a deeper, calcified vessel). A, Courtesy, Yale Dermatology Residents’ Slide Collection. B, From Brinster NK, Liu…

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Distribution – Specific Differentials

Mar 5, 2017 by in Dermatology Comments Off on Distribution – Specific Differentials

Fig. 3.1 Pityriasis rubra pilaris. From Schwarzenberger K, Werchniak AE, Ko C. General Dermatology. London: Saunders, 2009. Fig. 3.2 Psoriasis, erythrodermic. Courtesy, Yale Dermatology Residents’ Slide Collection. Fig. 3.3 Congenital ichthyosiform erythroderma (autosomal recessive congenital…

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Vesicles and Papulopustules in Infants

Mar 5, 2017 by in Dermatology Comments Off on Vesicles and Papulopustules in Infants

Fig. 15.1 Neonatal cephalic pustulosis. Courtesy, Julie V Schaffer, MD. From Bolognia JL, Schaffer JV, Duncan KO, Ko CJ. Dermatology Essentials, 1e. Philadelphia: Saunders, 2014, with permission. Absent comedones Benign Cephalic Histiocytosis…

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Sclerosing Disorders

Mar 5, 2017 by in Dermatology Comments Off on Sclerosing Disorders

Fig. 12.1 Typical sites of involvement of sclerosing disorders. Eosinophilic fasciitis and limited cutaneous systemic sclerosis both involve the extremities, but the deeper involvement of the former is evidenced by rippling of…

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Follicular Processes

Mar 5, 2017 by in Dermatology Comments Off on Follicular Processes

Fig. 9.1 Pathogenesis of acne. From Bolognia JL, Schaffer JV, Duncan KO, Ko CJ. Dermatology Essentials, 1e. Philadelphia: Saunders, 2014, with permission. Fig. 9.2 Acne. A Open and closed comedones and several inflammatory papules….

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Dermal Inflammation

Mar 5, 2017 by in Dermatology Comments Off on Dermal Inflammation

Fig. 11.1 Sweet syndrome. A,B, Courtesy, Yale Dermatology Residents’ Slide Collection. Histopathology: Dense dermal infiltrate of neutrophils, sometimes with papillary dermal edema (Fig. 11.1C) Pyoderma Gangrenosum (Fig. 11.2) Any site, but commonly…

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Spongiotic/Eczematous Processes

Mar 5, 2017 by in Dermatology Comments Off on Spongiotic/Eczematous Processes

Fig. 6.1 Distribution patterns of atopic dermatitis in infancy. Courtesy, Julie V Schaffer, MD. From Bolognia JL, Schaffer JV, Duncan KO, Ko CJ. Dermatology Essentials, 1e. Philadelphia: Saunders, 2014, with permission. Fig….

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Small Papules Secondary to a Dermal Process

Mar 5, 2017 by in Dermatology Comments Off on Small Papules Secondary to a Dermal Process

Fig. 10.1 Lichen nitidus. A, Courtesy, Yale Dermatology Residents’ Slide Collection. Histopathology: Epidermal rete demarcating a lymphohistiocytic infiltrate in the superficial dermis Histiocytoses There are classic presentations of different histiocytoses (Fig. 10.2,…

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Blistering, Localized

Mar 5, 2017 by in Dermatology Comments Off on Blistering, Localized

Fig. 14.1 Microscopy of selected localized blistering conditions. *Can also be subepidermal.  Disorders With a Characteristic Morphology Bullous impetigo (Fig. 14.2) – somewhat tense vesicles/bullae or superficial erosions with collarettes of scale…

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