plasva

I too have this problem, but not every time I use lotions. I get rashes on my hands and feet every once in awhile, usually while in the shower (definitely an allergic reaction rash.) Thus I conclude I'm allergic to something in shampoo, conditioner, or soaps. I also once got a rash to cheap lotion after applying it immediately after shaving (legs.) The problem seems to happen less often if I use ONLY products from health food stores (not mainstream brands), but the last time I got a rash, it was in a hotel shower, so maybe there was residue in the tub.
I wish I knew what ingredient you and I could be allergic to... I'd suggest trying a lotion from a health food store, look for one with the most natural-sounding ingredients as possible. Maybe they'll even have a sampler you can try first! Keep your receipt, and ask to exchange it if you end up getting a rash. Just watch out for lavendar or tea tree oils in the lotions--common ingredients in natural lotions but one research study showed they can affect hormone balance in the body.
I like Avalon and Aubrey brands, because they don't contain parabens or other harmful preservatives (Avalon does tend to have essential oils, though.)
Good luck finding something!