Hey I am having a problem with glasses too, although don't get rashes on my ears particularly. Having said that, the skin all down the side of my right ear was peeling very badly last week but not sure why! However I do get problems on my nose! I have had the pads changed twice, first to a softer pad and now to a softer and larger pad (look bit silly but don't care!) Normally it is just very red/sore/itchy but yesterday evening a 'lump' has developed which is really sore! What is frustrating is that I have chronically dry eyes, so can't wear contacts. I have only recently discovered that I am allergic to nickel, chromium and cobalt, so was wondering if any of these metals are in my glasses? However it is wear the rubber pads come into contact with my skin that the problems seem to be. And if you are having problems with plastic glasses too this wouldn't explain it!
Be really pushy when you see a doctor, this is the only way I ever get anywhere! And it is not true that they don't do allergy testing unless it is a life threat; I was told similar 3 years ago and accepted it, and have struggled on, but after persisting symptoms (and other health complications), I got patch testing at a different hospital (where I am at university) and discovered I am allergic to nickel, chromium, cobalt, and balsam of peru (perfume essentially). And none of it was life threatening, just horrible and persistent symptoms! So push, as I have been told that the reason you get told by NHS that they don't really do allergy tests anymore is because they are too expensive, which is not good enough!