Child has something on her shoulder that looks like a wingworm its been on her for over 2 months now any idea of what this could be?

Any prior treatment?: If your child has a ringworm, it would need to be treated with topical antifungals. If this has been tried and has failed, a scraping of the lesion can be done to confirm or refute the diagnosis of ringworm. Other skin lesions that can look like ringworm are nummular eczema, guttate psoriasis, discoid lupus, and pityriasis rosea. You would need to see a physician for further evaluation.