• Fungal infection caused by dermatophytes that feed on keratin

Tinea Types

Clinical Features

Differential Diagnosis



Coverage for Trichophyton and Epidermophyton and all treatment should be at lease 1 week past resolution of lesions

Topical Therapy

Applies to Tinea corporis, pedis, cruris, and manus

Must use a topical therapy for 7-10days beyond resolution of lesions


  • Griseofulvin 500mg-1000mg PO once daily (20-25mg/kg/d)
    • Usually requires 8wk of treatment
  • Terbinafine for 2-4 weeks is as effective of 6-8 weeks of griseofulvin[1]
    • 62.5mg/day in children <20kg
    • 125mg/day in children 20-40kg
    • 250mg/day in children >40kg[2]
  • Selenium sulfide or ketoconazole shampoos are adjunct treatment
  • Children can return to school during treatment


  • Oral griseofulvin, itraconazole, or terbinafine for 6-8 wks[3]
  • Cephalexin 40mg/kg/d in 4 divided doses in addition to systemic antifungal treatment if there is evidence or high risk of bacterial secondary infection
  • Ketoconazole shampoo, isolated towels decrease spread to household members

Tinea corporis

First line should be topical therapy. For refractory cases or severe bullous disease the below anti-fungals are all equivalent options.


  • Discharge

See Also


  1. Fleece D, Gaughan JP, Aronoff SC. Griseofulvin versus terbinafine in the treatment of tinea capitis: a meta-analysis of randomized, clinical trials. Pediatrics. 2004;114(5):1312-1315. doi:10.1542/peds.2004-0428
  2. Andrews MD, Burns M: Common tinea infections in children. Am Fam Physician 2008;77(10):1415-1420.
  3. Gnanasegaram M. Kerion. DermNet NZ. 2012. http://www.dermnetnz.org/fungal/kerion.html