I can't diagnose by online description, but it doesn't sound particularly like herpes. If the red spot was caused by masturbation, it can't be herpes; but if it was there and you only noticed it after masturbation, it could be anything. If the spot fades within 1-2 days and never turns to an open sore or blister, you can probably safely forget it. Otherwise, see a healthc are provider.
HHH, MD
Sorry for the second post Doc...I think it bears mentioning that the girl I was with did not have any outward symptom of an STD - no lesions or sores that I could see, no discharge, etc. Thanks.
Doc...for clarification - it has not turned into any type of sore or lesion thus far - 2 days since I noticed it. Should I safely forget it now, or do you mean to wait an additional 2 days?
I didn't mean the time frame with so much precision. 2 days, 4 days, somewhere in there, from wherever you want to start counting. If it's getting worse at any time, or if not better soon, see a provider.
HHH, MD