I really, really feel your pain. I got PUPPPs last time around at about 36 weeks (really hope I don't get it this time) I had it all over my belly starting down my thighs and on the underside of my arms, it was miserable. I tried all the otc stuff as well, benadry didn't touch it, and the oatmeal baths were useless as well. I eventually started a 10 day steriod pack the day before I ended up going in labor. Actually it didn't end up really going away though until a few weeks after delivery. I was not as up on natural healing methods last time. I think after the fact I read something about dandelion root being helpful. So, honestly I didn't research the steriods the degree to which I would now. I asked the pharmacist and ob a million times about the safety and was assured it was okay. So, I really cannot give much concreate help. Just some sympathy. I would scour the web for herbal remedies and see what you can get a hold of- I certainly know that it is not something you can ignore. I remember that it wasn't until I was very heavy labor that I was able to forget how much it itched.
Happily Married to my : 11 yrs- Mama to wild-eyed monkey boy 7-04, fiery little girl 4-07, and the happy smiley baby that sleeps 11-09!