This is a well demarcated lesion with raised advancing borders and clearing centers which are characteristic of granuloma annulare. They certainly look like ringworm but there is no scale on these lesions. Without scale, you cannot do a KOH. If you can't do a KOH it is probably not ringworm. These lesions are often seen in young adults and a large number of lesions can occurr. There seems to be a propensity for this type of lesion in patients who have inherited the diabetic trait. Diabetes is often found in other family members. Therapy is readily available. A granuloma annulare lesion gradually spreads peripherally in a circular pattern with no apparent scaling. Ringworm or tinea corporis may often be the first diagnosis that comes to mind with these lesions. For more information about granuloma annulare, click here.