The term 'crack from dryness' can be summarized by the four-letter word 'CHAP'. This term is used to describe skin that has become dry and cracked due to lack of moisture. It is a common problem in areas with low humidity, such as deserts, and can be caused by exposure to the sun, wind, or cold temperatures. In addition, it can be caused by certain medical conditions, such as eczema or psoriasis. Treatment for chapped skin includes moisturizing creams and lotions, as well as avoiding further exposure to the elements.