Nolan kept complaining that his ear was whistling the other day. I checked the hearing aid several times, but I couldn't hear any feedback. I did a listening check, and everything sounded A-OK.
Then, last night, he started screaming in pain. After a little while, he said, "I feel better now," and a thick stream of horribleness started pouring out of his ear.
More at http://saywhatmunchkins.blogspot.com/2011/11/rats-another-ear-infection.html