Which of the following is a sign of a bacterial infection of the nail?

• A. Discoloration
• B. Peeling skin
• C. Excessive nail growth
• D. Thickening of the nail

Answer: (A)

Discoloration of the nail is a significant indicator of a bacterial infection. When bacteria invade the area around the nail or within the nail structure, they can cause changes in color, which often appears as yellow, green, or even blackish spots or patches. This discoloration occurs due to the presence of bacterial toxins and waste products, which can alter the natural appearance of the nail.

In contrast, while peeling skin, excessive nail growth, and thickening of the nail can be associated with various nail and skin conditions, they are not specifically indicators of bacterial infections. Peeling skin may relate to dryness or skin disorders, excessive nail growth is typically a sign of other nail health issues rather than infection, and thickening of the nail could be associated with fungal infections or other non-bacterial conditions. Thus, recognizing discoloration as a symptom helps in diagnosing a bacterial infection accurately and ensures proper treatment.