Lichen striatus

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

    Also known as: Blaschko linear acquired inflammatory skin eruption (BLAISE)

    Clinical Features:

    • A self-limited dermatosis usually presenting in spring or summer
    • Most common in children, with a female predominance
    • Presents as a unilateral eruption of Nscaly papules on the limbs which coalesce into a linear or curved band
    • Nail changes may occur, including onycholysis, splitting or nail loss.
    • Often resolves leaving hypo- or hyperpigmentation
    • Associated with atopy in up to 50% of cases

    Histologic Features:

    • Early lesions may show only nonspecific mild chronic dermatitis.
    • Other lesions may closely resemble lichen planus or lichen planopilaris.
    • In more prototypical, established lesions, however, there is a spongiotic dermatitis with lichenoid and interface features:
      • Parakeratosis
      • Normal to slightly acanthotic epidermis
      • Spongiosis
      • Basal vacuolar change
      • Lymphocytic exocytosis
      • Satellite cell necrosis
      • Marked upper dermal as well as superficial and deep perivascular lymphohistiocytic infiltrate
    External Links:

    Cases associated with this book:

  • Lichen striatus
    Author: Artur Zembowicz M.D. Ph.D.

    Conference: DermatopathologyConsultations.com Teaching Collection
  • 12 year old boy with linear papules on extremities
    Author: Svetlana Faktorovich

    Conference: Tufts First Year Medical Student's Dermatopathology Elective