G' day to Yourself urangutan,
Interesting post, but, perhaps it would be more to the point if people could state an example of a disease which is indeed, NOT, a reaction in one form or another.
It is my belief at present, that all diseases are reactionary. Now, it does seem self-evident that those diseases caused by bacteria, viruses, germs of every discription are reactionary either to the foreign organism itself, or to the waste products of that organism or both. The point being that reaction is key to understanding behaviours across the board, weather reaction understood as disease or reaction understood as a political movement, their nature are the same. Remember the nature of the term, dis-eased, not then, at ease.
Correlational dis-ease, correlational dis-order, correlational degreneration of the organism---------what do you say folks, you must be a healthy bunch!!
Think context illness!