What are marks on the skin that indicate injury or damage known as?

Marks on the skin that indicate injury or damage are referred to as lesions. This term encompasses a wide variety of skin changes that may result from trauma, infection, inflammation, or other skin conditions. Lesions can manifest in multiple forms, such as blisters, ulcers, or growths, and they often signal that the skin has been altered or harmed in some way.

The other terms, while related to skin conditions, describe different phenomena. Rashes generally refer to observable changes in the skin's appearance that often indicate irritation or inflammation, but they don't specifically denote injury. Scars specifically refer to the residual marks left after healing from an injury or surgery, indicating that an injury has already occurred and healed, rather than the injury itself. Bumps are a more general term and can refer to any raised area on the skin without necessarily indicating damage or injury. Thus, lesions is the most accurate term for marks on the skin indicating injury or damage.