Pityriasis lichenoides chronica

    Article Contributors: 
    Sean Klepper M.D.
    Stephen Lyle, M.D., ...

    Clinical Features:

    • Generalized, chronic, small erythematous papules that evolve to form a pinpoint dusky center
    • Lesions persist for several weeks, then heal without scarring.
    • May evolve from PLEVA or arise de novo.

    Histologic Features:

    • Parakeratotic scale, rare necrotic keratinocytes, mild basal vacuolization (changes less pronounced than in PLEVA)
    • Upper dermal perivascular lymphocytic infiltrate with exocytosis of lymphocytes into the epidermis
    • Upper dermal and epidermal hemorrhage
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    Cases associated with this book:

  • Pityriasis lichenoides chronica
    Author: Stephen Lyle, M.D., Ph.D.

    Conference: DermatopathologyConsultations.com Teaching Collection