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Tinea Corporis

(Body Ringworm)

by Denise M Aaron, MD

Tinea corporis is a dermatophyte infection of the face, trunk, and extremities.

Tinea corporis is a dermatophytosis (see Overview of Dermatophytoses) that causes pink-to-red annular (O-shaped) patches and plaques with raised scaly borders that expand peripherally and tend to clear centrally. A rare variant form appears as nummular (circle- or round-shaped) scaling patches studded with small papules or pustules that have no central clearing. Common causes are T. mentagrophytes, T. rubrum, and M. canis.

Diagnosis

  • Clinical evaluation

Differential diagnosis includes

  • Pityriasis rosea

  • Drug eruptions

  • Nummular dermatitis

  • Erythema multiforme

  • Tinea versicolor

  • Erythrasma

  • Psoriasis

  • Secondary syphilis

Treatment

  • Topical or oral antifungals

Treatment of mild-to-moderate lesions is an imidazole, ciclopirox, naftifine, or terbinafine in cream, lotion, or gel. The drug should be rubbed in bid continuing at least 7 to 10 days after lesions disappear, typically at about 2 to 3 wk.

Extensive and resistant lesions occur in patients infected with T. rubrum and in people with debilitating systemic diseases. For such cases, the most effective therapy is oral itraconazole 200 mg once/day or terbinafine 250 mg once/day for 2 to 3 wk.

Resources In This Article

Drugs Mentioned In This Article

  • Drug Name
    Select Trade
  • LOPROX, PENLAC
  • SPORANOX
  • LAMISIL

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