I'm having allergy testing repeated for various reasons, but one thing I'm confused about: does being on pred long-term-ish (about 4 months now, 15-40mg at variois times) affect the results of skin prick testing for allergies?
I've looked it up and found conflicting answers. I've also rung the AUK nurses who said it was a really good question and they didn't know. The nurse when I booked the tests said I just needed to stop antihistamines, but consultant said pred *might* affect allergy blood test results so I was wondering re skin prick tests as well and no-one seems quite sure; search online (including academic sites) is also inconclusive: everything says short term courses won't affect it but there's not that much either way on longer term, might have to look again though).
Cons just said 'oh well you shouldn't be on pred anyway' - yes thank you very helpful, especially when the allergy testing is related to finding an alternative to pred!
I can't realistically come off it in a time frame that makes sense for the allergy testing (the nurse said tree pollen season starts soon and as I strongly suspect I'm allergic to that I don't want to spend 3 days without fexofenadine when it's started!), but had wondered if it's worth trying to get down as low as I can? I will be on 20mg next week when it's currently booked, so wasn't sure if a) waiting till the next week when I'll still be on 20 but willl have been on the lower dose for longer (current plan is to drop 5mg every 2 weeks) would make any sense, or trying to wait till I'm down to 15 - except that before, trying to drop to 15 didn't really work so well and I ended up on a higher dose!
This can't be an uncommon problem though so wondered if anyone else had had the same issue and what you found/what you were told? AUK nurses said to check with hosp re protocol which I could do but feels like I""ve already had some confusing answers from them? So thought I'd ask here as well and see what other people's nurses/cons etc have said, if anything.
Thanks! I would really like these tests to be useful - I don't want allergies but as I am really sure that I'm allergic to at least some trees and possibly something else as still having probs in the winter, I would like the tests to reflect that as it makes life easier...