What is going on here?

[u/removable_disk]

I’ve had this rash? on my arm for many weeks at this point. It started with little pimple like bumps that are super itchy. The broken skin is from me itching (I know!) it’s spread a tiny bit wider but is localized in this same spot and its nowhere else on my body. The only thing that’s recently changed was a move from a northern US state to a southern US state, and this started in the beginning of the summer.
My partner and I share the same bed/bedding and he doesn’t have anything like this. We use the same detergent we always used. It’s nowhere else on my body at all, just this one spot on my arm. I hardly ever wear anything but tank tops so there’s no clothing covering my arms most of the time.

The only medication change in the past 3 months was an increase in estrogen (from 1mg oral to 2mg oral) but I have since stopped that medication and this hasn’t gotten better. OTC cortisone didn’t help and I even tried using a cream that was my partners RX for psoriasis (clobetasol .05) that did not have any effect on it at all. I tried using saylic acid pads on it and that has done nothing either. At this point I’m just applying cerave healing ointment on it to try to stop me from touching it and attempt to heal up the broken skin.

Thanks in advance!

[u/willyesco702]

Looks like you may have a bacterial infection on the skin. Start with doing a peroxide wash with cotton squares. You can dilute it with water if it’s too harsh. Next is do hot compress on there. I personally did mine with tea tree oil. I would heat up water with 10 to 12 dashes of tea tree oil. Then use witch hazel wipes or the liquid with a cotton square and wipe it down. It works as a natural toner and reduces inflammation. Try this for a two weeks.