Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Atopic Dermatitis?

…:348. “Prurigo is the name applied to various severely itchy skin eruptions (prurigo = itching scale), whose primary lesions show urticarial seropapules, urticarial papules, or persistent papulonodules which become excoriated by scratching.&#…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Fibrosing Dermatitis

…Figure 5.356 A&B. The life of a lesion of acne keloidalis: sequence chronologically from suppurative infundibulitis to fibroplasia. The sequence, over a period of many years, of suppurative infundibulitis, extrusion of neutrophils in large number…

Histologic Diagnosis of Inflammatory Skin Diseases

Nerves

…er. Many inflammatory diseases of the skin are associated with itching; among the most notorious of these are dermatitis herpetiformis, Grover’s disease, and scabies. Scratching is thought to relieve itching by disturbing the rhythm of afferent…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.7.1A: Diffuse dermatitis, mixed-cell + 10.7.1B: Proliferation of venules lined by plump endothelial cells, a sprinkling of neutrophils and nuclear “dust” of neutrophils, and clumps of granular violaceous mate…

Histologic Diagnosis of Inflammatory Skin Diseases

Bacillary angiomatosis

Bacillary angiomatosis Synonyms Epithelioid angiomatosis Presentation stereotypical Age and sex Any age in patients with acquired immunodeficiency syndrome or with other forms of immunosuppression; rarely in patients without immunodeficiency Distrib…

Histologic Diagnosis of Inflammatory Skin Diseases

Limitations of the Algorithmic Method

The algorithmic method proposed in these pages and predicated on patterns histopathologic is intended to be more than just a guide to diagnosis of particular pathologic processes in skin and subcutaneous fat; it is meant to serve as a springboard fo…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Pustular Dermatitis

See Fig. 5.307 A&B. Figure 5.307 Pustular dermatitis. A. Infundibular. B. Surface epidermal. Although most pustules in skin are housed in infundibular epidermis (Fig. 5.308 A&B), many are lodged in surface epidermis (Fig. 5.309 A&B)….

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…apule that is brought about by the effects of both rubbing and scratching energetically is termed a “picker’s nodule” (Fig. 5.165 A&B). Scratching wildly may initiate a variety of changes in the skin, among those being signs of…