病因不明症（英语：idiopathic disease）指的是任何病因不明的疾病。[1]
英文词汇idiopathic起源于古希腊语ἴδιος idios "one's own" and πάθος pathos "suffering", idiopathy，意思是“一个属于自己原有类型的疾病”。
在医学上，那些疾病病因鲜为专家学者所知的疾病，也常被称为病因不明症。例如：局灶节段性肾小球硬化症、强直性脊柱炎等。[2]
参考资料
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