嗜痂成癖shì jiā chéng pǐ

嗜：爱好。痂：疮口或伤口表面凝结的硬壳。比喻爱好怪诞的事物已成为一种癖好。也说“嗜痂之癖”

例语出《南史·刘穆之传》：“穆之孙邕性嗜食疮痂，以为味似鳆鱼。”

英be addicted to; have an addiction for stamps the like; like to lick sb.'s scabs;