These patches can also be itchy and scaly, making it hard to tell the difference between nummular eczema and ringworm. However, nummular eczema is usually more noticeably irritated and inflamed ...

Ringworm often presents as a neat, circular rash. However, in these cases, the infection can resemble lesions from eczema, making it challenging to diagnose, said Avrom Caplan, MD, study lead ...