Just went to the Doc this morning for my yearly. I still have a rash from the tour I was on similar to what you are describing. I wasn't too worried about it because it really isn't bothering me (I haven't been riding too much lately)
She said to put on a cortosteroid cream before going to bed. I have some I regularly use for allergic skin reactions. You can get 1% solutions (cream form) under different brand names over the counter. I have used them for 49+ years and have had no adverse reaction.
Don't know if this will help but it is worth a try. I am going to start tonight.
It's about the journey and being in the moment, not about the destination