Histologic Diagnosis of Inflammatory Skin Diseases

Persistent light reaction

Persistent light reaction Synonyms Actinic reticuloid, chronic actinic dermatitis, chronic photosensitive dermatitis, photosensitive eczema Presentation stereotypical Age and sex Men especially Distribution of lesions Sun-exposed sites, i.e., the fa…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Xerosis, Asteatosis, Asteatotic Eczema, Eczema Craquelé, and Dry Skin?

“Asteatosis Synonyms: Xerosis. Ger asteatose; Fr ast√©atose Definition: Asteatosis is that condition of the skin in which there is absolute or relative deficiency of the sebaceous secretion.” Ormsby OS, Montgomery H. Diseases of the app…

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

Erythrodermas—Nonspecific Histopathologically?

“We feel that the skin biopsy is of little value in the study of exfoliative dermatitis, unless specific lymphomatous infiltration is present. The absence of such changes does not preclude eventual demonstration of malignant lymphoma. We wer…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Keratosis Lichenoides Chronica?

“So we have to start once more [in regard to what is the authentic nature of lichen rubra moniliformia], returning to the old case of Kaposi by which the question began in 1886.” Pinkus H. Lichen ruber moniliformis Kaposi. Arch Dermato…

Histologic Diagnosis of Inflammatory Skin Diseases

Chondrodermatitis nodularis helicis

Chondrodermatitis nodularis helicis Presentation stereotypical Age and sex White men mostly Distribution of lesions Localized to the helix or anthelix Individual lesions Papule or nodule often crusted or keratotic, but sometimes smooth; an early pap…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen striatus

Lichen striatus Synonyms Linear lichenoid dermatosis Presentation stereotypical Age and sex Mostly girls, but sometimes boys and young adults of both sexes Distribution of lesions Usually an extremity Arrangement of lesions Linear Individual lesions…