PSI Texas State Board Nail Tech practice exam

What is a common sign of a bacterial infection in the nail?

1. Swelling

2. Discoloration

3. Painful tenderness

4. Excessive nail growth

The correct answer is: Discoloration

Discoloration is a common sign of a bacterial infection in the nail because it often indicates that there is a presence of bacteria affecting the nail matrix or the surrounding tissue. Bacterial infections can lead to changes in color, usually observed as a yellow, green, or brown hue, which arises from the byproducts of bacterial growth. Swelling, though associated with infections, can occur for various reasons, including inflammation from injury or other conditions unrelated to a bacterial infection. Painful tenderness is indeed indicative of infection but is not exclusive to bacterial sources, as it can also be present in fungal infections or trauma. Excessive nail growth is typically not related to infections and can result from other conditions or factors. Therefore, discoloration, particularly in the context of nails, serves as a direct marker for bacterial involvement and warrants further assessment for proper treatment.