i have had this same problem for years now. it is not extremely bad but it is very annoying. i'm constantly breaking out in random rashes. small bumps on a red area that itch like crazy and lasts a couple minutes up to an hour. then dissapear. i most often get them on my butt or arms but they can appear anywhere from my neck down. it happens multiple times a day every single day. i have never gotten an exact answer as to what it is. but. when it all started i was diagnosed with cold urticaria (allergy to cold yes it's a real thing). at the time i was diagnosed i was literally breaking out and swelling up to the point that i had to go to the er every single time i got even the least bit cold. eventually the swelling and such subsided but now i just randomly break out in these crazy rashes even if i'm not "cold". i have always just blamed it on the cold urticaria and went on. i do think that the reason my butt and arms break out more than anything else is because those are the coldest parts of my body. one way to test for cold urticaria is to take an ice cube and hold it to your arm (or anywhere) for a few seconds up to a minute and then remove it. i don't break out with the ice i break out as that area starts to warm back up and of course it only lasts a few minutes and then it is gone. once i stopped swelling up and having to go to the er all the time i stopped taking antihistamine and have not tried to take one since because they all make me extremely tired. it may help i don't know. i just choose to live with it.
i have a itchy rash that comes and goes what could be causing this? . the rash appears in different areas of my body for an example a rash showed up on my wrist and stayed a while and went away. later the same day it appeared on my stomach and then on my thighs etc. its itchy while it is present. at one point my hands first turned red and then start to itch really bad to the point i had to wash my hands repeatedly. i work in the medical field so i wash my hands a million times a day. what could be causing this reaction?