What will cause hives and lip and eye swelling besides allergic reactions?

Question by steph: What will cause hives and lip and eye swelling besides allergic reactions?
I have been suffering with hives since last January I also have swelling of my lips and eyes. I have been to a specialist who says I am not allergic to any thing that he can find. I feel flushed alot have itchy hands and sometimes suffer from extreme anal itch. My bowel movements have increased and I have acid reflux sometimes. I have gained a few extra pounds and my breathing seems heavy at

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