A pathological condition resulting from an overdose of cinchona bark or its alkaloid derivatives and marked by headache,dizziness,hearing loss,and ringing in the ears.

• 金鸡纳中毒由于过量服用金鸡纳或其生物碱衍生物所产生的病症，症状是头痛、眩晕、耳聋和暂时性耳鸣。