Seborrheic dermatitis

    Article Contributors: 
    Sean Klepper M.D.
    Artur Zembowicz M.D....

    Clinical Features:

    • Greasy, scaly patches affecting the seborrheic areas of the body: scalp, face, upper chest and back and sometimes the flexural areas
    • Some patients have a family history of the disorder.
    • May be caused by Pityrosporum ovale
    • Associated with a number of diseases, including HIV, Parkinson's disease, obesity, epilepsy, myocardial ischemia, malabsorption and alcoholism

    Histologic Features:

    • The features are similar to those of both eczematous dermatitis and psoriasis:
      • Psoriasiform hyperplasia
      • Hyper- and parakeratosis, especially around hair follicles
      • Spongiosis
      • Exocytosis of neutrophils
      • Upper dermal perivascular lymphocytic infiltrate
    • Yeast forms are sometimes seen in the stratum corneum.
    • In the early stages seborrheic dermatitis may closely resemble psoriasis.
    External Links:

    Cases associated with this book:

  • Seborrheic dermatitis
    Author: Artur Zembowicz M.D. Ph.D.

    Conference: DermatopathologyConsultations.com Teaching Collection