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Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.62.1A: Vasculitis, small-vessel, neutrophilic + 10.62.1B : Thrombi in the lumen of venules in the upper part of the dermis in company with innumerable extravasated erythrocytes = Livedo vasculitis, early ┬áNecrosis of the epiderm…

Differential Diagnosis in Dermatopathology

Discussions

Toxic shock syndrome may be exceedingly difficult to differentiate clinically from severe erythema multiforme (which sometimes is referred to imprecisely as the drug-induced or adult form of toxic epidermal necrolysis) because those two conditions h…

Histologic Diagnosis of Inflammatory Skin Diseases

Livedo vasculitis

Livedo vasculitis Synonyms Livedoid vasculopathy Atrophie blanche Atrophie alba PURPLE (painful purpuric ulcers with reticular pattern of the lower extremities) Livedo reticularis with summer ulcerations Livedo with ulceration Milian’s white…

Differential Diagnosis in Dermatopathology

Discussions

Distinction histopathologic between Mucha-Habermann disease and secondary syphilis may be difficult because the two diseases have so many attributes in common. Both may be associated with a superficial and deep perivascular and lichenoid infiltrate…

Differential Diagnosis in Dermatopathology

Mucha-Habermann disease vs. Lymphomatoid papulosis

Papules, nodules, vesicles, and sometimes bullae that develop in response to “bites” of arthropods, among the most common offenders being mosquitoes, bedbugs, and mites of scabies….

Histologic Diagnosis of Inflammatory Skin Diseases

Acrodermatitis enteropathica

Acrodermatitis enteropathica Synonyms Zinc deficiency Presentation stereotypical Age and sex Infants of both sexes who suffer from an inherited deficiency of zinc; may occur in adults; characterized in infants by a triad of acral dermatitis, alopeci…

Differential Diagnosis in Dermatopathology

Discussions

Mucha-Habermann disease and lymphomatoid papulosis have several features clinical in common, among those being papules and papulovesicles that erupt in crops in persons of all ages. Histopathologically, both diseases are characterized by wedge-shape…

Differential Diagnosis in Dermatopathology

Discussions

The differential diagnosis that forms the basis of this chapter is an artificial one because, in our view, pityriasis lichenoides acuta and pityriasis lichenoides chronica are simply different manifestations of a single process pathologic, namely, M…

Histologic Diagnosis of Inflammatory Skin Diseases

Staphylococcal scalded skin syndrome

Staphylococcal scalded skin syndrome Synonyms Staphylococcal Lyell syndrome Dermatitis exfoliativa neonatorum Ritter disease Ritter von Rittershain-Lyell’s disease SSSS Staphylococcal toxic epidermal necrolysis Presentation stereotypical Age a…

Differential Diagnosis in Dermatopathology

Discussions

In their fully developed expression, allergic contact dermatitis and irritant contact dermatitis are both intraepidermal vesicular dermatitides that come into being following exposure to different kinds of contactants, namely, allergens in the forme…

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