Derm

Erythema Induratum

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Erythema Induratum

  • Epidemiology
  1. More common in middle aged women
    1. Account for 80% of patients
  • Pathophysiology
  1. Chronic paniculitis
  • Signs
  1. Tender Red Nodules on the posterior lower legs
  2. May occur in crops of lesions
  • Labs
  1. Tuberculin Skin Test
  2. Skin biopsy
    1. Rule out a Vasculitis
  • Differential Diagnosis
  1. Tuberculosis
  2. Paniculitis
  3. Erythema Nodosum
    1. Paniculitis that affects the anterior lower legs