Hello. Thanks for writing to us at healthcaremagic These patches could either be Discoid dermatitis Or Fungal Infection/Tinea. The distribution of the patches however goes more in favor of Discoid dermatitis rather than fungal infection. Outer thighs are a relatively common site for these patches because this area is dry; Tinea is common in the inner thigh area. A KOH examination would prove to be conclusive in that regard. Topical OTC antifungals e.g clotrimazole 1% cream may be tried if KOH is positive for fungal elements. On the other hand if it is negative for fungal elements treatment would eb along lines of discoid dermatitis. Since underlying dryness is the predisposing factor in Discoid dermatitis, therefore I would suggest an OTC intensive moisturizer over the whole affected area. Specifically for the patches, I would suggest a topical potent steroid cream e.g clobetasol propionate cream, twice daily for 2-4 weeks. Topical steroids are prescription products. I would suggest that you visit a dermatologist in your region for a confirmatory diagnosis as well as appropriate prescription. Regards