 [ Symptoms ] my daughter had a dental cleaning now she has a large bubble on her gum above one of the teeth what should i do [ Disease ] ringworm is just a skin fungus not a worm as long as the skin lesion is covered and under some topical anti fungal medications it poses no risk to others or the food service yes he can work keep in mind that this skin lesion has been self diagnosed so this recommendation assumes he is correct there are several skin lesions that can mimic ringworm so it would be wise to get it properly examined and diagnosed