i would not agree that properly washed underwear would likely retain any fungus residuals. fungus can exist just about everywhere in the home - especially in warm dark or moist areas. finding the one source or sources may be difficult. have you seen a dermatologist? if not this would be recommended. have you tried using man1 man oil? it contains several antibacterial vitamins and nutrients that help with infection and other skin issues down there. simply rub it into your penis skin and let it do the work. it's all natural too so no side effects. you can get it online. hope this helps.
can a penile fungal infection remain in underwear and cause constant reinfection? . have been dealing with some sort of irritation for months on the tip of my penis that i can not find the cause for. have tried antibiotics antifungals and almost everything else (have seen many doctors). one doctor suggested i buy all new underwear as well as use an antifungal as it may be fungal but i keep getting reinfected from my tainted underwear. is this possible?