So, I have had ear problems on and off the past few years.... I was chalking it up to whatever is going on with me, but I noticed this past IVIG that I awoke after the benadryl and during my infusion.... with that buzzing sensation in my head and muscles - but my ears... they were buzzing and full/clogged feeling and they stayed that way for a good 3-4 days... I seemed to react strange to the entire infusion.. just felt really off.. now 4 days later, it kicked in and I feel great... just curious if this is a side effect?