What is the characteristic appearance of a puncture wound?

A puncture wound is specifically caused by a sharp object piercing the skin, resulting in a deep hole. This type of wound is typically narrow and deep, which differentiates it from other wound types. The sharp object creates a direct channel into the tissue, which can affect underlying structures such as muscles, nerves, and blood vessels. The seriousness of a puncture wound also lies in its potential for infection, as the entry point can harbor bacteria deep in the tissue without sufficient drainage. This emphasizes the need for proper medical evaluation and treatment, particularly to prevent complications related to stagnation of fluids and the risk of tetanus in some cases.