What is the technical term for a crack in the skin or chapped lips?

The term "fissure" is used to describe a crack in the skin or chapped lips. A fissure specifically refers to a linear break or split in the skin that can occur due to dryness, irritation, or other factors. This condition often manifests in sensitive areas, such as around the mouth or between the toes, and can lead to discomfort or even infection if not properly treated.

In contrast, a lesion refers to an abnormal change in structure of the skin or other tissues, which can include various types of injuries or abnormalities but does not specifically denote a crack or split. Excoriation involves a scratch or abrasion of the skin, often caused by rubbing or scraping, rather than a crack. An ulcer is a deeper lesion that results in the loss of tissue and is usually associated with a more serious underlying condition, thus differing from the superficial nature of a fissure.

Understanding the distinctions between these terms helps in accurately identifying skin conditions and determining appropriate treatment.