My embarrassing problem

What I'm about to tell you is rather embarrassing. You see I have a problem; it's a skin condition where I'd break up in hives every now and then. It's some kind of allergic reaction to what I don't know but I noticed that the hives come back to the same areas of my body when it breaks out and it also then to happen when there's a change in weather or season. I take anti-histamine and use lotion to help cope but it never goes away.