Search Results for: erythema multiforme

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Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous Fat: Panniculitis

…volves over the course of many weeks (Fig. 5.406 A&B). Figure 5.404 A&B. Early in the life of a septal panniculitis: erythema nodosum. Early in the course of erythema nodosum, neutrophils and nuclear “dust” of them are scattered…

Histologic Diagnosis of Inflammatory Skin Diseases

Fixed drug eruption

…dermis especially, but sometimes, in the uppermost part of the reticular dermis, too. Differential diagnosis histopathologic Erythema multiforme displays changes at the dermoepidermal junction and in the epidermis identical with those of fixed drug…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…or: Eosinophils are nearly invariable in drug eruptions. Reason: Some drug eruptions, such as that which manifests itself as erythema multiforme, erythema nodosum, and simulators of lichen planus, at times may be devoid of eosinophils. Error:…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…cally in infections by some viruses, such as those of herpes, pox, and Coxsackie, but also of noninfectious diseases such as erythema multiforme, fixed drug eruption, and Mucha-Habermann disease. The term ballooning, if unmodified, is enigmatic…

A reticulated pigmented rash on the lower leg

A reticulated pigmented rash on the lower leg

…beginning but becomes more pigmented over time. Pain or pruritus is not usually noted by the patients. Rare forms of bullous erythema ab igne have been described. The pathophysiology of the erythema ab igne development is not completely understood,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…cells on lobules, tuberculoid granulomas at the periphery of lobules, and fibrosis in the center of markedly widened septa = Erythema nodosum Erythema nodosum begins in septa with predominance of neutrophils, progresses to preponderance of…

Differential Diagnosis in Dermatopathology

Discussions

…tiating outlined at the outset enable a histopathologist to render a diagnosis with precision. The early lesions clinical of erythema multiforme are edematous papules that soon become slightly purpuric plaques on which blisters form. When a papule…

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