Which physical findings suggest seborrheic dermatitis?

Updated: Nov 13, 2020
  • Author: Marc Zachary Handler, MD; Chief Editor: William D James, MD  more...
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Answer

Physical findings may include the following:

  • Scalp appearance ranging from mild, patchy scaling to widespread, thick, adherent crusts; plaques are rare; lesions may spread from the scalp onto the forehead, the posterior part of the neck, and the postauricular skin

  • Seborrheic skin lesions manifesting as scaling over red, inflamed skin; hypopigmentation (in blacks); oozing and crusting; blepharitis (occurring independently)

  • Lesion distribution following the oily and hair-bearing areas of the head and the neck; extension to submental skin can occur

  • Either of two distinct truncal patterns: (1) annular or geographic petaloid scaling or (2) pityriasiform variety (rare)


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