Otolaryngology Book

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Erythema Induratum

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

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