Idiopathy

n.	1.	A peculiar, or individual, characteristic or affection. All men are so full of their own fancies and idiopathies, that they scarce have the civility to interchange any words with a stranger. - Dr. H. More.
	2.	(Med.) A morbid state or condition not preceded or occasioned by any other disease; a primary disease.

Noun

1.

idiopathy - any disease arising from internal dysfunctions of unknown cause Synonyms: idiopathic disease, idiopathic disorder

disorder, idiopathic disease, idiopathic disorder, upset