[QUOTE=Dr. Smith;998186]According to goggle, no, but it's very close in spelling and meaning to etiopathology: 1. Consideration of the cause of an abnormal state or finding.

What does the word "consideration..." mean here? Does that mean "thinking about it"?

Anyway, idiopathic is of course an existing word meaning simply "cause unknown". The noun form of the word, "idiopathology" does not actually exist as a dictionary entry but to me, has a nice ironic ring to it as in "the field of study of ignorance about pathology"