I am have been suffering from random hive breakouts since last march. During that period of time I suffered a nervous breakdown. Since them I have continued to randomly break-out in hives. I have been making sure that what I wash my laundry with is the same and I have not changed my soup in years (i use dove). I also have panic disorder, post-traumatic stress disorder, insomnia, and poly-cycstic ovaries. I do have an allergy to sulfur but I always make sure no food or medications that I take contain any. My question is, can the random break-out of hives be due to stress/anxiety? If anyone has any ideas, please feel free to share. I have tried benadryl and for a while I actually thought it was due to an allergy from benadryl but I stopped taking it last march and they continue to occur.