唇干裂

yì yù pí láo huò quē fá wéi shēng sù yě kě yǐ yǐn qǐ chún gān liè

抑郁、疲劳或缺乏维生素B也可以引起唇干裂。

They can also develop cracks due to depression, tiredness, or lack of Vitamin B.