It annoys me that medical terms for the same conditions keep changing for no apparent gain (not just psych terms). I was just fine with IDDM and NIDDM before we had to change to DM Type 1 and DM Type 2. And my knee had chondromalacia but now I have to say I have patella femoral syndrome.

If there is new information then sure, fine, rename it but stop with renaming the same stuff already!