Search Results for: erythema multiforme

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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Toxic Erythema?

…prinkled along the dermoepidermal junction in conjunction with vacuolar alteration. The changes are very similar to those of erythema multiforme except for the absence of individual necrotic keratocytes and of ballooned keratocytes from epidermal…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema nodosum leprosum

…kin. In short, erythema nodosum leprosum is a particular manifestation of lepromatous leprosy, wholly unrelated to authentic erythema nodosum. True erythema nodosum is a mostly septal panniculitis, whereas erythema nodosum leprosum is a mostly…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema figuratum

…t all related to one another, any more than annular lesions of lichen planus, syphilis, sarcoidosis, granuloma annulare, and erythema multiforme are related to one another by virtue of the ring shape of them. Moreover, the so-called superficial type…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema nodosum

…is a manifestation of lepromatous leprosy “in reaction.” Last it must be emphasized that erythema nodosum, like erythema multiforme, leukocytoclastic vasculitis, Sweet’s syndrome, pyoderma gangrenosum, and Destombes-Rosai-Dorfman…

Histologic Diagnosis of Inflammatory Skin Diseases

Borreliosis (erythema migrans)

…t to erythema migrans which does not vesiculate. Conventional reactions to the “bite” of a tick are not annular. Erythema multiforme can be differentiated from multiple lesions of erythema migrans because individual lesions tend to be…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Erythema Dyschromicum Perstans?

“During the year 1959–1960 in the Department of Dermatology of the Vargas Hospital in Caracas, we studied five adult patients with a peculiar new pigmentary disorder. . . . The skin eruption is characterized by numerous macules with a grayish color of varying intensity. This color is in marked contrast to the normal skin. When…

The ball SITE sign: ball sports-induced targetoid erythema in a racquetball player

The ball SITE sign: ball sports-induced targetoid erythema in a racquetball player

…id erythema at both locations spontaneously resolved within 7 to 10 days. Figure 1. The “ball SITE (sports-induced targetoid erythema) sign” presenting as erythematous annular lesions surrounding normal-appearing skin at the sites of high velocity…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema marginatum

…upper part of the dermis, in addition to a superficial perivascular infiltrate of lymphocytes. Bibliography Bibliography for erythema marginatum Barlow T. Erythema marginatum. Br Med J 1883;ii:509. Lehndorff H, Leiner C. Erythema annulare. Z…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema annulare centrifugum

Erythema annulare centrifugum Synonyms Erythema perstans Erythema gyratum perstans Erythema figuratum perstans Presentation stereotypical Age and sex Middle-aged or older adults of both sexes; children sometimes Distribution of lesions Any part of…

Differential Diagnosis in Dermatopathology

Erythema nodosum vs. Nodular vasculitis

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…

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