I ve been having blood blisters pop up on my hands on occasion. They last only a few days, fade away and appear more like liver spots, then disappear. There s no pain. I take various meds for fibromyalgia and have been having dental problems with implants that aren t taking properly. I have an artificial hip. Because of the dental problems and fibromyalgia onset after hip surgery, my oral surgeon had me tested for metal allergies. I m highly allergic to palladium, but not titanium as he had feared.