history: My son got his first ear infection last week.  He was so miserable.  He perked up after the antibiotic kicked in. My son got his first ear infection last week. Uh oh. Is he better now? Yes_comma_ thank goodness.  The antibiotics fixed him right up. OK_comma_ good. What do you think caused the infection in the first place?
current: The doctor mentioned his congestion might have contributed, but I got the impression that they just happen sometimes with no real cause.
next: Is he a baby? I heard it happens often.