Going through a HORRIBLE case of PUPP right now at 40w3d - it's starting to get better finally after nearly a month, and it is covering nearly 75% of my skin currently. Here's what I've been doing.
These two will take a little longer to work, but supposedly help cleanse the liver which is where the problem originates - I got both at Rite Aid.
Dandelion Root capsules - way stronger than the tea - I take 3 540 mg capsules 3X/day and I think this is what's helping the most. I've been doing that one week today and total areas of skin are now PUPP free that were horrible several days ago.
Flaxseed Oil - I take one tablespoon of GNC brand orally 1X/day - tastes a bit icky but just chase it with something good
Then, for the "Itch Crisis" times, here's what I found to provide some relief when I was in tears and losing my mind (could find all at a drug store, Target, Meijer, etc):
Sarna Lotion - smells like a Grandpa, but numbs/cools the skin and really does relieve the itch
Band Aid Brand Itch Relief Gel - Main ingredient is camphor, and it smells like Girl Scout Camp but works REALLY well - comes in a clear tube with green cap
Aloe with Lidocaine - currently what I'm putting on most often, helps keep skin from drying out too much but takes some mild itch away. Won't touch the worst of the itchies when you're going mad, though.
Tea Tree Oil: For a few days I applied this with a cotton ball to all areas covered with PUPPs which was a lot. It smells really strong, kind of medicinal, but helped dry out some of the hives I think. I haven't used it in a few days, but I think it majorly helped bring down the rash.
Arnica Oil: Used over the tea tree oil to help with the swelling - this doesn't smell bad at all and is a little soothing, but won't take down major itch.
I've also taken Arnica 200c twice - only take once/week at this strength, but it helps with the swelling. You can get it in 6c strength and take more often instead.
Apis Mellifca 6c - also helps when hives flare up and get inflamed to bring swelling down
I think the one thing that has helped with my sanity is my prescription for Atarax 25 mg. It's worth calling and asking for a script for - I take it mostly at night before bed to help me sleep, but it does keep the itchies at bay for 2-4 hours, and you can take it every 4. Works better than Benadryl for me.
Warm (not hot) baths in Aveeno Oatmeal bath packets worked for a while, but started to lose their efficacy pretty quickly. I have now taken a few baths in Epsom Salts and find this to be working at this point.
Good luck! Feel free to message me if you have more questions...I nearly induced last week because I was so miserable and at the end of my rope, but have gotten through another week and it seems to be getting better. Now if this daughter of mine would decide to be born, or we're going to have to induce anyway!!