What is the definition of a "fissure" in dermatology?

A fissure in dermatology is defined as a linear break in the skin. This term is commonly used to refer to cracks or splits in the epidermis, which can occur in areas where the skin is subjected to pressure or tension. Fissures can be painful and may be associated with various skin conditions, including dry skin, eczema, or infections. They can also be seen in areas of the body that undergo frequent movement, such as the hands or feet.

The other options describe different dermatological terms and conditions. A complete loss of skin integrity refers to ulcers or wounds, which are more extensive and involve deeper layers of the skin. A raised area of abnormal skin typically describes a plaque or papule, which is elevated above the surrounding skin. A type of benign tumor would refer to neoplasms such as lipomas or warts, which are growths rather than skin breaks. By focusing on the specific characteristic of fissures as linear breaks, it becomes clear why the correct definition aligns with this option.