No, this is not a yeast infection, because it came on suddenly and went right away. Infections don't do that; irritations do. I'm not sure whether it's the fluid or the pH, but it doesn't matter much. Since it went right away, there seems no need to use any treatment at all. If the rash stops resolving, you should show it to a doctor.
Best.
Dr. Rockoff
My girlfriend of six months couldn't get her Aviane prescription and missed a dose so she bought spermicidal gel in "injector" form to provide some extra assurance against pregnancy. Immediately after using them she experienced extremely intense itching and irritation, pain when urinating, etc. She used much more than an adequate amount of gel and in the past (years ago) had bad reactions to spermicidal condoms. She spent the better part of a week in pain and discomfort, scratching until she was sore, occasionally observing a white discharge. I noticed I too developed a few red spots or dots on the head of my penis, though I've experienced no pain or itchiness whatsoever. The spots sometimes are very visible and sometimes not at all. We've both made appointments to get it looked at but I suspect it is not an STD because the symptoms appeared immediately (on both of us) after use of the spermicidal gel. Furthermore, if it is a direct result of the gel, why aren't there HUGE warnings on these products that it can cause an intense reaction in a portion of the population?
Is this an allergy? A yeast infection? Candida overgrowth?