Your child was diagnosed at age two. No reputable doctor would make such a diagnosis. That you would go along with that makes your comments regarding ADD suspect. But I would agree that if tonsils are depriving a child of needed sleep, then they should be removed. It has nothing to do with any other ailment. That a child would be healthier and happier if he slept well is a given.
I guess it can be said either way. With ADD, it is not like you have a broken bone and that, after having your tonsils out, that bone will look as if it has never been broken. ADD is diagnosed based on symptoms that you are having. If those symptoms all go away, some would say that you have been cured.
On the other hand, you could also view it as a misdiagnoses. Yes, the child has great difficulty paying attention, etc. but it is not just that this is the way his brain is. He is not getting enough quality sleep and therefore can't focus and will sometimes try to stay active (hyper) to try and stay awake.
Either way you look at it, having tonsils and adenoids removed has helped many kids with ADD/ADHD, including mine.
If you are saying is that a tonsil problem can be misdiagnosed as ADD I won't argue with that, especially since most ADD diagnoses are bogus anyway. But you suggested in your first post that a tonsilectory could cure ADD. Off the wall!!
As far as the tonsils/adenoids go...
My son's were enlarged and thus were obstructing his breathing while sleeping. This then tends to cause sleep apnea and causes the child to briefly wake up often. This frequent waking up means that the child does not get the restful sleep s/he needs. Now that my son's airway is more opened, he is sleeping better at night. That means that, during the day, he is not bouncing off the walls trying to keep himself awake. Before surgery, he was always tired and frequently cranky/grouchy but constantly going from one thing to the next in order to stay awake.
I'm not saying this will help everybody but it is worth getting checked out. I find it interesting that it used to be that almost all kids had their tonsils/adenoids out and hardly anyone had ADD/ADHD. Now that almost no one has them removed, it seems everybody has ADD/ADHD. I don't know for sure how much of a link there is but I find it very interesting and I know that the surgery has helped my son.
A diagnosis of ADD for a two-year-old is inappropriate. No knowledgeable doctor would make such a diagnosis. And the tonsil removable business is off the wall.
This may sound strange but, does she still have her tonsils? I have heard a lot about ADD/ADHD patients having tonsils and adenoids removed and being basically cured. My three year old was diagnosed with ADHD at two years old. We had him seen by an ENT a few months ago. His tonsils and adenoids were removed in May. He is doing much, much better in the ADHD area.