What is a common sign of a nail infection?

A common sign of a nail infection is pain and swelling. These symptoms occur as the body's immune response to an invading pathogen, which may be bacteria or fungus. When the skin around the nail becomes infected, it can lead to inflammation, resulting in discomfort, tenderness, and visible swelling. This reaction often indicates that the body is trying to fight off the infection, and it is essential for nail technicians to recognize these signs promptly to avoid further complications and refer the client to a healthcare professional if necessary.

The other options, while they may relate to nail condition or appearance, do not specifically indicate an infection. Bright color polish simply refers to cosmetic choices and has no bearing on infection. Rough nail texture can arise from various conditions, but it does not solely signify an infection. A shiny surface of the nail might indicate healthy nail growth or the application of certain products, but again, it does not suggest an infection. Recognizing the symptoms of infection is critical in nail care to ensure proper treatment and maintain client health.