There are no official guidelines to assist in answering this question. I will search for relevant research papers instead.
From the Research
Treatment Options for Tinea Corporis
- Oral itraconazole 100 mg daily for 15 days is effective in treating tinea corporis, with a clinical response rate of 80% at the end of treatment and 78% at 6 weeks post-treatment 1
- Topical therapy is generally successful in treating tinea corporis, unless the infection covers an extensive area or is resistant to initial therapy, in which case systemic therapy may be required 2
- Fluconazole 150 mg once weekly for 2-4 weeks is an efficacious and safe regimen in the treatment of tinea corporis 3
- Terbinafine 1% cream applied once daily for 7 days is effective in treating tinea corporis, with a mycological cure rate of 84.2% compared to 23.3% with placebo 4
Topical Treatments
- Azoles, such as terbinafine and naftifine, are effective in treating tinea corporis, with terbinafine showing a statistically significant higher clinical cure rate compared to placebo 5
- Combinations of azoles with corticosteroids may be slightly more effective than azoles alone for clinical cure, but there is no statistically significant difference with regard to mycological cure 5