Idiopathic

Definition: relating to or denoting any disease or condition that arises spontaneously or for which the cause is unknown.

Essentially, a disease or disorder that just happens for no reason:

Why I Looked It Up

From an article about Natalie Cole:

The family told the Associated Press the singer died of idiopathic pulmonary arterial hypertension, which led to heart failure. […] Because Cole’s case was idiopathic, the exact cause is unknown.

I think that last sentence is superfluous. It was idiopathic because it was unknown, not the other way around. And even then, you’re just confirming the definition there, really.

This is item #154 in a sequence of 332 items.

You can use your left/right arrow keys or swipe left/right to navigate