 [ Symptoms ] i have a coworker who thinks he may have ringworm he is been using antifungal cream for a week is he still contagious  additionally while he is been using what he claims is an antifungal cream he said it has seemed to get worse could it be something else or is it just a more stubborn case of ringworm i am asking these questions because while i do not have any close contact with this person we do touch some of the same office equipmentitems i have disinfected my desk with lysol wipes and have been washing my hands i am wondering for how long i need to be more cautious i am kind of a germophobe as it is [ Disease ] if you do not have any direct contact with a person who just assumes self diagnosed he has ringworm a fungus called tinea corporis not a worm of course you do not have anything to worry about transmitting this fungus requires a considerable amount of close contact which you do not have since the is getting worse after using anti fungal cream it would be in his best interest to be properly diagnosed there are many round skin lesions that can mimic tinea corporis so his self diagnosis may be wrong or he has not used the anti fungal medication long enough