This post still continues to piss me off. Any type of rash can be caused by any number of things. It could be a fungal or yeast infection,it could be chafe, it could be caused by beng unclean and growing bacteria that cause irritation. It could be an allergy to fabric, soap or detergent. It could be caused by wet clothes, it could be caused by reaction to semen (even yer own), it could be caused by so many things. The fact that a groin rash is a common symptom of numerous stds, is why when you have a groin rash you go to the mother fucking doctor. The reason why there is an epidemic of STDs is b/c people think they can diagnose themselves, or symptoms go unnoticed, or are so mild, people don't think to get checked. Generally women will display more obvious symptoms of infection. They are infected by men who are told by other people or even doctors, that their symptoms are "grotch rot", "fungal infection", "chafe", or by men who do not notice their mild symptoms. I have taught sex ed. to youth, and continue to be astounded at the level of ignorance people have pertaining to things like birth control and stds. a groin rash is something not to take lightly. Many stds can cause fertility or birth problems for women, and they carry an awful stigma. It is such a simple concept to me to go to a doctor if you have a groin rash. I mean, i guess over time, if you are prone to rashes, you can recognise the symptoms, and assume it's yeast, or whatever...but especially if it's your first rash, and especially if it's on your groin, be respectful of your future or current sexual partners, and go to a fucking doctor. I mean, like, i said, you will probably be dismissed or misdiagnosed anyway, because even a swab at the wrong time, can be false negative, and a blood test could be misleading if it's for herpes, and it's not the right kind of diagnositic procedure which differentiates the herpes types. Anyway, I'm sorry. I'm sure the thread starter is pretty sure by now that he doesn't have herpes, but if it's a groin rash, go get a professional diagnosis. There are free clinics for homeless people all over the place, and most of them don't require ID.