Hello and welcome,
Thanks for your query.
What is most important here is whether or not you have a sexual history my friend. Are you married? And how many sexual partners do you have?
The only reason I am asking this is, to ask you to abstain from sexual contact for a while. At least till a doctor can examine you and finalize a diagnosis.
The doctor will be requiring information like, when did these rashes first appear, and when was the last time you had sexual contact with a person? Please keep all information ready.
In my opinion, it is best to avoid using any substance on these rashes. You could consult an infectious disease specialist or if they are difficult to find you could even consult a Physician who could help you.
Yes, as you have been wondering, there is a chance that this is a fungal infection
, but it is best we first examine and later test it to come up with a confirmed diagnosis, before treating it.
I hope I have succeeded in answering your questions, you could write back to us anytime for further clarifications.