From the description, it could either be a fungal infection tinea corporis
where one gets itchy round red scaly patches which eventually clear from centre to form ring shaped lesions or it could be psoriasis where one gets red round elevated thick skin lesions covered with densely adherent silvery scales.
While tinea will respond to oral fluconazole and topical antifungal
like clotrimazole or terbinafine, psoriasis would require stronger topical steroids.
As the treatment varies in both the conditions, a consultation with dermatologist is mandatory. For the same either consult a dermatologist
nearby or use premium features of this website .