I am not entirely sure what to tell you. My best guess would be that if you are planning on going and getting a tattoo, wait untill your hives are at a low I guess you could say. I have psoriasis and three tattoos. I have personally never had any issues with them. Have you asked your derm if regular tanning would help at all? It gets a little expensive though. Other than that I am not sure what to tell you. I hope you figure it all out!!