Search Results for: excoriation

Differential Diagnosis in Dermatopathology

Psoriasis on volar skin vs. Dyshidrotic dermatitis

…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….

Differential Diagnosis in Dermatopathology

Dermatitis herpetiformis vs. Bullous pemphigoid

…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….

Differential Diagnosis in Dermatopathology

Discussions

…n to bullae. Erosions and ulcerations are features common in dermatitis herpetiformis, they typically being a consequence of excoriation induced by severe pruritus. The lesions of dermatitis herpetiformis commonly involve the scalp and are…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

…and nonfamilial. Reason: Perforating collagenosis, in every instance, is factitious; by dint of a penetrating injury, often excoriation with the equivalent of talons, degenerated bundles of collagen come to ascend in an effort at extrusion and find…

Histologic Diagnosis of Inflammatory Skin Diseases

Scar

…as so often is the case when blisters appear above scars that are consequent to injury external. The scar that results from excoriation tends to be thin and situated immediately beneath the epidermis. The terms scar, keloid, dermatofibroma,…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatitis herpetiformis

…e epidermis consequent to scratching, and ulcers result from loss of epidermis and part of the papillary dermis secondary to excoriation. Crusts consist of serum, granulocytes, and, sometimes, red blood cells. Differential diagnosis histopathologic…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…volvement of epithelial structures of adnexa, often extensive and deep, in the same manner as surface and infundibular epidermis 10. Involvement of epithelial structures of adnexa slight, if any, and superficial 11. No signs of excoriation 11. Signs…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…Darier’s disease (keratosis follicularis) Grover’s disease (transient acantholytic dermatosis) 1. No evidence of excoriation usually 1. Erosions, ulcerations, and scale-crusts, i.e., evidences of excoriation, present often 2. Focal…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Perforating Diseases?

…ng collagenosis is not a disease sui generis. It is a consequence of severe trauma external, usually in the form of vigorous excoriation that results in ulceration and degeneration of collagen bundles situated in the upper part of the dermis. Normal…