It's more likely to be eczema or psoriasis. Neither would respond to an antifungal. Neither is serious or catchy.
Try over-the-counter hydrocortisone 1% twice a day while you wait for a doctor to see it.
Best.
Dr. Rockoff
The additional information is consistent with my reply. I suggest you treat it as I suggested, and seek medical attention for definitive diagnosis. And avoid unprotected sex!
Dr. Rockoff
Oh, and the redness is aggravated by soap and water. Neosporin did nothing for it either. Several instances of unprotected vaginal and oral sex from female acquaintance preceded this.
Finally, the patch has been evident in it's current state for approx. 3 months. Sorry for so many posts. This has me a little bit anxious.