I'm not sexually active. I've never experienced this itch in my life.
1 week ago, I stumbled upon a half inch circular slightly raised plaque near my left groin fold. it itched. I thought it might be ringworm, so I started applying clotrimazole cream on it. (plaque didn't increase in size over the past week and it doesn't itch anymore.)
In normal seated position, this plaque touches the left scrotum. Within 2 days, my whole left scrotum started to itch & burn intensely, and my inner left thigh grew out a carpet of hair follicle bumps in the area closest to the left scrotum. Interestingly, my thigh didn't itch.
I rubbed the left scrotum because it itched like hell, and it became red, thick, somewhat rough, and shiny compared to the right scrotum, which was softer and smoother. There's a visible difference. The left scrotum looks like it has deeper folds because of the inflammation. There are no pustules on the scrotum. It's just thicker and red with a few bumps. The attached picture shows my left inner thigh near the scrotum with all the bumps.
Now, one week later, my right scrotum is starting to itch, and I see follicle bumps popping up on my right groin/inner thigh closest to the right scrotum. Looks like the itch spread to my right scrotum, and jumped onto my right thigh.
Also, I have about 7 small red non-itchy bumps on my glans penis. I think it spread there by contact.
Over the past 2 days, I've used a warm salt water compress on my groin, and the follicle bumps on my thigh have decreased in size. I'm also using the salty compress on my scrotum, hoping it's also just folliculitis. I have also been using petroleum based hydrocortisone to ease the itch. It only itches every few hours. The rest of the time, I feel nothing at all.
A burning itch on the scrotum = folliculitis? I'm thinking the scrotal itch has to do with the follicle pustules on my thigh, although my scrotal skin doesn't have visible pustules and it's not oozing anything.