I have really bad Psoriasis. My fingers peel, so do my feet. It looks like a had a popped blister, but it wasn't. Almost like... an air bubble under my skin. I also have it on my arms, knees, back, and the top of my neck under my hair.
WHAT I DO TO GET RID OF IT!!!!!!!!!
Salt water. Beach salt water. Not water with table salt. no. Go to the beach. Soak in the water for 20 minutes. It'll be gone in a matter of days. I don't know what it is, it runs in my family. But ever since I was little, I'd go to the beach to keep it away. My whole family does the same. It works INCREDIBLY. I haven't been to the beach in about 3 months, and it's just STARTING to come back. My hands are all peeling, so are my feet. I have my rashes in my back, elbows, and knees. I'm going to the beach tomorrow.
ALSO. If you don't live close to the beach. You can refridgerate the beach water. That's what I do, since I'm a 40 minute drive. I bring lots of empty water bottles, milk containers, 2 liters, etc. And fill them up. Take them home, and put them in my fridge. If you set them in room temperature, bacteria can grow. So it has to be refriderated. When you're ready to use it, sit in your bath tub. Plug the drain. Pour it over the spot. And use a cup or wash cloth to pick up more water and run it over the spot.
Good luck. =] It works for me and my family, I just hope it works for you all.