I had PUPPS and OMG I feel so sorry for your cousin, it really is nasty.

Nothing much helped me at all unfortunately. I spent lots of time soaking in a bath just to get away from the itching. I tried every lotion and potion I could think. My OB did prescribe some very low cortisone cream which helped a little at night which is when I was the most itchy. I also used a lot of sorbolene as I found that if my skin dried out it was soooo much worse.

I really feel for her. Unfortunately the only cure is to give birth! The itching stopped as soon as I went into labour and the rash was all gone about 3 weeks after DD was born.