II. Signs

  1. Hyperpigmentation and Hypertrichosis
  2. Overlies a firm nodular base
  3. Lesion may "ripple" when stroked

III. Distribution

  1. Anywhere

IV. Differential Diagnosis

  1. Congenital Malanocytic Nevus (distinguish with biopsy)

V. Labs

  1. Biopsy shows Arrector Pili Muscles

VI. Course

  1. No increased risk of malignant transformation

VII. Management

  1. None

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