Tinea

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Background

  • Infection caused by dermatophytes that feed on keratin
  • Variations
    • Tinea capitis
    • Tinea corporis
    • Tinea pedis
    • Tinea cruris

Diagnosis

  • Scaly, variable pruritus
  • Corporis: ring appearance w/ central clearing
  • Capitis: patchy alopecia

DDx

  1. Pityriasis rosea
  2. Lichen planus
  3. Psoriasis
  4. Eczema
  5. Contact dermatitis

Treatment

  • Topical antifungal tx for all except capitis
    1. Clotrimazole 1% BID x2-3wk
      1. Must use for 7-10d beyond resolution of lesions
  2. Capitis
    1. Griseofulvin 20-25mg/kg/d or BID
      1. Usually requires 8wk of tx
    2. Selenium or ketoconazole shampoos are adjunct tx
    3. Okay for child to go to school
  3. Kerion
    1. Cephalexin 40mg/kg/d in 4 divided doses in addition to systemic antifungal tx

Source

Tintinalli

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