II. Epidemiology

  1. Incidence: 33-40% of newborns

III. Pathophysiology

  1. Persistent fetal vessels
  2. Dilated dermal capillaries (telangiectases)

IV. Differential Diagnosis

  1. Port-Wine Stain (Nevus Flammeus)
    1. Contrast with Nevus Simplex which is typically bilateral

V. Signs

  1. Flat, pink (or salmon colored) vascular patch
  2. Blanch on compression
  3. May become more prominent with crying
  4. Distribution and Course: Often symmetric - involving the bilateral face
    1. Glabellar area (Angel's Kiss)
      1. Resolves spontaneously in 95% of cases
    2. Upper Eyelids
      1. Resolves spontaneously in 100% of cases
    3. Nape of neck ("Stork bite")
      1. Resolves spontaneously in 50% of cases
      2. Persistant lesions will usually cover with hair

VI. Management

  1. No intervention typically needed as these resolve spontaneously in most cases
    1. Most lesions by 18 months (many lesions resolve while still newborns)
  2. Flash-Lamp pumped pulse dye laser (FPDL) in persistent cases

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