Welcome to just answer.
Your symptoms in view of itchiness, circular skin lesions and presence of symptoms for two months are very well suggestive of ringworm thats fungal infection.
Many antifungal creams can clear the condition in around two weeks. Examples of such preparations include those that contain clotrimazole(Cruex cream, Desenex cream, Lotrimin cream, lotion, and solution), miconazole(Monistat-Derm cream), ketoconazole(Nizoral cream), econazole (Spectazole), naftifine (Naftin), and terbinafine (Lamisil cream and solution). Any one cream can be used.
Rarely systemic treatment may be needed with antifungal tablet like griseofulvin (Fulvicin, Grifulvin, and Gris-PEG).
Minimizing sweat and moisture can help prevent fungal infections.
Please ask if want me to explain anything.