Aha, I forgot about Adler's article in Volume & of CCWAA entitled "What is Neurosis" on page 132. Still although the neurotic's retreat is well described, a clear definition of neurosis still is not present in my mind. By the way, anyone seriously wishing to study Adlerian psychology really must have these volumes from the translation project. See link ...
http://ourworld.compuserve.com/homepages/hstein/#110
The Neurotic "yes-but" refrain is also well described. Yes these are things a neurotic does, but how does one define this set of symptoms and behaviour choices?