dear user your question about itchy blisters for treatment needs some illustration about the treatment and management itchy blisters does not indicate mainly of having fungal infection of penis althaugh fungal infection can cause this symptoms but there are some other causes need concern if fungal infection confirmed diagnosis the treatment will be simple as taking oral antifungal drugs such as fluconazole will be helpful alot but itchy blisters may be due to viral infection or bacterial infection also the most common cause is genital herpes that administered thraugh sexual contact and appear as blisters and itchy and some times pain when urination also bacterial infection can cause that and will need to take antibiotic i advise you to see your doctor to examine you to detect the causative organism if suspected herpes you can take acyclovir for treatment as it is antiviral drug against herpes you can send us aphoto of the blisters if you need confirmatory information about management even if what the causative organism you should avoid sexual contact untill recovery if you had sexual contact with another person in the past few days you should ask her about having any sexual disease because that will help alot hope that helps