Pathology
Images
Atlas of dermatopathology
Josef Feit, Hana Jedličková, Günter Burg, Luděk Matyska, Spasoje Radovanovic et al.
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+ Introduction
+ Literature
+ Support
+ Skin biopsy
+ Non-tumorous skin diseases
+ Skin tumors
+ Cysts of the skin and subcutis
+ Soft tissue lesions
+ Some lesions of the oral cavity
+ Dermatovenerology
+ Collection of histological slides by prof. Günter Burg
+ Collection of histological slides by prof. Werner Kempf
+ Collection of histological slides of dr. Ram Chandra Adhikari
Seborrhoic dermatitis
Clinical signs
  • acute or chronic dermatitis
  • location: scalp, central areas of the face, breasts, periumbilical area, eylids, retroauricular region (seborrhoic areas)
  • age: appears usually after puberty
  • severe forms affect patients with AIDS
  • serpiginous, annular, yellow, pink patches covered with yellow squames
  • dandruff is considered a mild form of seborrheic dermatitis of the scalp
Histology

Variable acanthosis, spongiosis, exocytosis, parakeratosis. Edema of papillary dermis, superficial perivascular infiltrate (lymphocytes, histiocytes, some neutrophils). Parakeratosis is centered on follicular ostia.

Chronic forms show acanthosis with only minimal spongiosis and resemble psoriasis.