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Topic
Review Topic
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Topic
Snapshot
  • A 26-year-old man presents to his primary care physician for an abnormal skin rash in his legs. The skin rash is found bilaterally at the level at the tibia. He says that the rash appears red and is warm to the touch. He denies any recent trauma to his lower extremities. Medical history is significant for ulcerative colitis. Physical examination is notable for bilateral erythematous nodules that are slightly raised. These lesions are warm to the touch and are tender to palpation. (Erythema nodosum)
Introduction
  • Definition
    • subcutaneous fat inflammation
  • Epidemiology
    • incidence
      • erythema nodosum is the most common type of panniculitis
  • Etiology
    • inflammatory
      • erythema nodosum
      • lupus panniculitis
      • cutaneous polyarteritis
    • infectious
    • traumatic
    • deposition
      • gout
      • calciphylaxis
    • malignancy
      • cutaneous lymphoma
Presentation
  • Symptoms/physical exam
    • of note, there are various forms of panniculitis
      • ulcers
      • atrophy
      • sclerosis
      • livedo racemosa
    • can be tender to palpation
Studies
  • Skin biopsy
    • indication
      • in cases where the diagnosis is unclear or the diagnosis needs to be confirmed
Treatment
  • Note that the mainstay of treatment is treating the underlying cause of the panniculitis

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