I've never personally had any form of allergy test, but I have heard from others that a "wide-spectrum" allergy test, i.E. The one where they test for many possible allergens simultaneously, is extremely painful occasionally, especially if an allergen is found.
My little brother might soon be subjected to one that is totally unnecessary (well, 99% unnecessary), and if it's as painful as I heard, I intend to prevent it. However, my information is all old (it's been since middle school) and is nothing but uneducated hearsay. Can I get some opinions from people who've had these kinds of test of the amount of pain involved?