Search Results for: erythema multiforme

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Histologic Diagnosis of Inflammatory Skin Diseases

Behçet’s Disease

…ther “herpes simplex recidivans in loco” (which may be joined by a variety of alterations in the skin, including erythema multiforme and erythema nodosum) or of Crohn’s disease (which is associated often with an acneiform eruption…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…n began just in the past few days. As a rule, there are few, if any, changes in the cornified layer of an evolving lesion of erythema multiforme because damage to epidermal keratocytes happens so rapidly that those epithelial cells do not have time…

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,…

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