Hi Everyone, I've had most of the symptoms described on this forum for a couple of years now & have found that it usually happens overnight so I wake up with swelling, usually on my face. It seems to be linked to pressure as I usually sleep on my back & when I turn over in the night & lie on my side that's when it happens on the area I'm lying on. I don't know why it started in the first place but I find that taking two Cetrizine Hydrochloride allergy tablets [any make] gets rid of the problem within a couple of hours. Hope this is useful for some of you.