About 2 weeks ago I noticed a single small sore on the shaft of my penis, it looked more like a small nic and had a bit of a scab, it just seem to have appeared as a scab. I never noticed any blister or any other discomfort until I saw it, thought I may have just got the skin caught in my zipper. Every once in a while I put cortisone on it and it seem to start to clear up but then I would pick at it and it would persist. Even with the sore there, I would masturbate frequenlty (twice a day), after masturbating rather hard (2 weeks after the initial sore). I noticed a number of small little blisters around the initial sore and some inflamation. The initial sore and the area around it now look similar to a picture of genital herpes that I've seen online. I suffer from eczema and have had small breakouts all over my body, including on my penis, the small blisters looked similar to my eczema breakouts I have on my fingers. During the time I discovered the initial sore and the subsequent blisters I've felt fine and have had no other medical issues. Is this genital herpes or am I letting myself get carried away with it self diagnosis? What would be the best treatment to get rid of this?