Histologic Diagnosis of Inflammatory Skin Diseases

Leishmaniasis

Leishmaniasis Synonyms Leishmaniosis Presentation stereotypical Age and sex Young adults of both sexes Distribution of lesions Localized in Oriental sore, widespread in the mucocutaneous and post-kala-azar types, and disseminated in the anergic cuta…

Histologic Diagnosis of Inflammatory Skin Diseases

Sebaceous Units

A sebaceous gland, a lipid-producing epithelial structure, develops in the fourth month of fetal life from a protuberance of epithelium that lies between the uppermost protrusion, which represents the future apocrine unit, and the lower bulge, which…

Histologic Diagnosis of Inflammatory Skin Diseases

Foreign body reaction

Foreign body reaction Synonyms Foreign body granuloma Presentation stereotypical Age and sex Any age and either sex Distribution of lesions Localized usually Individual lesions Papules, plaques, and nodules Course Longstanding Variations clinical…

Histologic Diagnosis of Inflammatory Skin Diseases

Granuloma annulare

Granuloma annulare Presentation stereotypical Age and sex Any age in both sexes Distribution of lesions Localized, often to extensor aspects of extremities, or widespread Configuration of lesions Annular, sometimes arcuate Arrangement of lesions Sca…

Histologic Diagnosis of Inflammatory Skin Diseases

Rosacea

Rosacea Synonyms Gutta rosea Presentation stereotypical Age and sex Young and middle-aged adults, usually Caucasian women Distribution of lesions Center of the face in vertical and horizontal directions, i.e., nose, forehead, cheeks, and chin Indivi…