Who suffers from adenoids?

Who suffers from adenoids? How do you prevent children from suffering, my daughter has been struggling for years, she seems to have outgrown it, but because of our medicine, everything was always going down (complications), ending with antibiotics. Now, did I get sick from a pillow or a virus from school brought on by the younger one, and I'm in a state of bewilderment. I seem to know a lot about them, but even I don't remember what to treat them with, doctors here are... so we leave babies at the day of birth, I want to write him an instruction manual, but I forget what to do. Help