Ear Fullness

CC'ed the Nutrition and Ear Nose Throat forums;

As some already know I have a condition where my ear feels full 24/7/365.  However some times it is fuller than other times...  The last couple-three months I have come to understand that specific foods can make your ear feel very full such as Salt and Caffeine.  I just had an apple and 15-20 minutes later my ear felt extremely full and brain fog came about where I could not concentrate at all on what I was attempting to do.  My question is, could an apple do this and what in the apple would do it?