What causes the green discoloration seen in bacterial infections on nails?

The green discoloration seen in bacterial infections on nails is primarily caused by waste products produced by bacteria, specifically Pseudomonas aeruginosa. This bacterium can proliferate in moist environments and is associated with nail infections. As it grows and metabolizes, it releases pigments, particularly pyocyanin, which lead to the characteristic greenish color.

Understanding this phenomenon is crucial for nail technicians, as it can help in identifying potential infections early. Addressing the source of the infection and maintaining proper nail hygiene can help prevent the spread and recurrence of such conditions. Knowing that the discoloration stems from bacterial activity rather than other factors, such as blood accumulation or melanin deposits, allows for effective identification and treatment of the condition.