In listening to her relate her autobiography, he learned that she first suffered hives at the age of seven when her parents separated. He also discovered that she had recently been shaken by the premature death of a dear friend's baby whose birth she had witnessed. Her story made it clear to Chen that stress was a primary cause of her outbreaks.
在患者不斷自述、回憶下，才發現她 7 歲首次出現蕁麻疹時，正值父母離異；而最近她目睹好友生產，新生兒卻不幸夭折，讓她深感震驚，顯然，「壓力」是讓她發病的主因。