hi..Thanks for the query
you have not explained how the rash looks .There can be several possibilities. From the site and the kind of symptoms you mention, I would think about the possibility of a ringworm infection,as you say. Called tinea corporis
,it is a superficial dermatophyte infection
characterized by either inflammatory or noninflammatory lesions on the skin.A pruritic, slowly spreading annular plaque
is characteristic of a symptomatic infection. Patients occasionally can experience a burning sensation.A potassium hydroxide (KOH) examination of skin scrapings may be diagnostic in tinea corporis.
Topical therapy is recommended for a localized infection. I am not sure what are the creams applied, however, the ones recommended are creams having anti fungal components,eg, ketoconazole/ clotrimazole/ miconazole
:should be applied to the lesion and at least 2 cm beyond this area once or twice a day for at least 2 weeks.
If you have failed to respond to this , the next step is oral anti fungals like Terbinafine
or Flucoazole tabs .
With the duration of the patch mentioned, it will be wise to do KOH examination mentioned with the culture of fungus if any, and then proceed with further medications.
Hope this helps..take care!