How do you know if a ringworm is healing?i had small pimples in my thighs that ended up making a ring shape i have been using anti fungal cream but im not sure if its healing because it has now turned brownish blackish

Doctor can examine: Rashes are hard to describe or visualize in words. Not all ring-shaped rashes are skin fungal infections (some are not fungal infections). As a ringworm fungal infection resolves, it levels off with the rest of the skin and feels non-elevated, it returns toward normal skin color, it stops being itchy or weepy or crusty, etc... An in-person exam can help, or else a video exam with a good camera.