let me explain like this for you,
Since its not having any blister,fluid filled appearence ,painless and is without irritation,this eliminates the possibility of many other diseases including some STDs .
Avoid using any products(including bacitracin)since they may irritate the skin and in few cases hypersesitivity is seem after application. it doesnt seem to be a bacterial infection(as you dont present with additional symptoms)its more like a hypersensitive type ,Wash the area with mild soap and lukewarm water,can put some moisturizer(if you are circumcised then excessive dryness may also result in red spots)avoid using any latex products ,till this problem is resolved.also let the area breath(wear loose underpants)
You can buy an OTC hydrocortisone cream and apply twice daily.this will decrease the redness.
However a visual impression of a doctor is necessary for proper diagnosis. i suggest you to visit your Urologist for some diagnostic tests including clinical examination if you dont see results within few days.
i hope this information will be useful
If my answer has provided you with some good insight today, please click ****"ACCEPT"**** and I will receive proper credit for my time and effort, otherwise, JustAnswer.com will hold your deposit. Before leaving feedback, please let me know if you need clarification or more info.Bonus will be highly appriciated.