Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Necrotizing Vasculitis?

…nson does not communicate that that disease really is pustular psoriasis and the appellation necrotizing vasculitis does not convey the idea that the condition is leukocytoclastic vasculitis. One name for a disease is enough; pustular psoriasis and l…

Histologic Diagnosis of Inflammatory Skin Diseases

Introduction

Capability for accurate diagnosis of inflammatory skin diseases, clinically and histopathologically, requires familiarity thoroughly with embryologic, histologic, and anatomic aspects of the skin. Although examples of this precept are legion, only a…

Histologic Diagnosis of Inflammatory Skin Diseases

The Algorithmic Method

An algorithm is a method for calculation based on logical thought and orderly sequence, one that can be utilized for diagnosis of diseases of all kinds, including inflammatory ones of the skin. Once a disorder of the skin and/or subcutaneous fat has…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

“A relationship most likely exists between the verruciform appearance of the epithelium and the underlying foam cells. . . . One might suspect that epithelial breakdown, from some as yet unknown cause may secondarily elicit a foam-cell respo…

Histologic Diagnosis of Inflammatory Skin Diseases

Mucha-Habermann disease

…he manifestation accelerated extraordinarily, akin to pustular psoriasis vis-à-vis guttate psoriasis, bullous lichen planus vis-à-vis papular lichen planus, and bullous lupus erythematosus vis-à-vis “butterfly blush” and the latter being…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Discoid Lupus Erythematosus Versus Systemic Lupus Erythematosus?* I

*This subject was addressed in Resolving Quandaries I. Because the quandary was not resolved to our satisfaction there, it is revisited here. “Discoid lupus lesions can occur as the sole manifestation of lupus in the absence of systemic di…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dandruff a Disease?

“Seborrheic dermatitis consists of a dry form (simple dandruff), with small dry to thick powdery scales . . .” White JW. Localized eczematous disease. In: Sams WM, Lynch PJ, eds. Principles and practice of dermatology. New York, NY: Ch…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blaschkitis?

“Blaschkite de l’adulte is considered a new disease entity . . . described by Grosshans and Marot in their report of relapsing acquired unilateral skin lesions following Blaschko’s lines.” Megahed et al. Acquired relapsing…