Plainly
look up a word, understand it — no rabbit hole
idiopathic
adjectiveid-ee-oh-PATH-ik
meaning in plain English
A health problem that happens for no clear reason, with no one knowing what caused it.
for example
The doctor said her fatigue was idiopathic, meaning they couldn’t find any reason for it.
Imagine waking up one morning with a strange rash, but your doctor can’t figure out why it’s there—no allergies, no infections, nothing. That’s idiopathic: a problem that just shows up without a known cause. Why does it happen? Sometimes, we just don’t know yet.