II. Pathophysiology

  1. Congenital malformation of the pilosebaceous follicular unit

III. Epidemiology

  1. Incidence: 0.3% of newborns

IV. Signs

  1. Yellow, smooth, single, well-circumscribed hairless Plaque
  2. Typically identified in newborns
  3. Distribution
    1. Typically on the scalp
    2. May also occur on the face and neck

V. Course

  1. Lesions may become verrucous and more prominent as child enters teen years
  2. Associated risk of cutaneous carcinoma: 10-15%
  3. May be associated with epidermal nevus syndrome

VI. Management

  1. Excision near Puberty

VII. Reference

  1. Habif (2003) Clinical Dermatology, 4th ed.. Mosby, p. 773-813
  2. Mitchell (2023) Am Fam Physician 108(3): 301-2 [PubMed]

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