Cutaneous Blastomycosis

Aka: Cutaneous Blastomycosis

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II. Etiology

  1. Blastomyces dermatidis

III. Pathophysiology

  1. See Blastomycosis
  2. Direct contact of non-intact skin with contaminated soil or decomposing timber

IV. Symptoms

  1. Painful facial lesions (Pustules, ulcers or wart-type lesions)

V. Signs

  1. Distribution: Face (esp. eyebrows)
  2. Verrucous form
    1. Starts as Papule or Pustule with slow enlargement
    2. Later, the lesion forms crust with irregular borders
    3. Secondary Subcutaneous Nodules and abscesses may drain pus
  3. Ulcerative form
    1. Ulcerated lesion with sharp border
    2. Friable red granulation tissue at ulcer base may bleed easily

VI. Diagnosis

  1. Microscopy of purulent discharge with Potassium Hydroxide or Calcofluor stain
  2. Skin biopsy

VII. Differential Diagnosis

  1. Furuncle
  2. Contagious Ecthyma (Orf)
  3. Pyogenic Granuloma
  4. Squamous Cell Carcinoma

VIII. Management

  1. See Blastomycosis

IX. References

  1. Altman (2007) Am Fam Physician 76:1533-4 [PubMed]
  2. Bradsher (2003) Infect Dis Clin North Am 17:21-40 [PubMed]

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Related Studies

Ontology: Cutaneous blastomycosis (C0343922)

Concepts Disease or Syndrome (T047)
ICD10 B40.3
SnomedCT 45644002, 187065008
English Gilchrist's dis affect skin, cutaneous blastomycosis, cutaneous blastomycosis (diagnosis), North American cutaneous blastomycosis (disorder), North American cutaneous blastomycosis, Cutaneous blastomycosis, Gilchrist's disease affecting skin, Cutaneous blastomycosis (disorder), blastomycosis; cutaneous (etiology), blastomycosis; cutaneous (manifestation), blastomycosis; skin (etiology), blastomycosis; skin (manifestation), cutaneous; blastomycotic (etiology), cutaneous; blastomycotic (manifestation), skin; blastomycotic (etiology), skin; blastomycotic (manifestation), North American blastomycotic dermatitis
German Blastomykose der Haut
Korean 피부 분아균증
Spanish dermatitis blastomicótica norteamericana, blastomicosis cutánea norteamericana (trastorno), blastomicosis cutánea norteamericana, blastomicosis cutánea (trastorno), blastomicosis cutánea, enfermedad de Gilchrist que afecta la piel
Dutch blastomycose; cutaan, blastomycose; huid, cutaan; blastomycose, huid; blastomycose, Cutane blastomycose
Derived from the NIH UMLS (Unified Medical Language System)

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