All of the following descriptions identify possible causes of paronychia, EXCEPT?

Paronychia is an infection that occurs around the fingernails or toenails, typically involving inflammation and swelling. The condition is commonly caused by various factors that compromise the integrity of the skin around the nailbed.

Trauma is a well-known cause, as it can break the skin barrier and allow for pathogens to enter. Bacterial infections are also a primary cause of paronychia, as bacteria like Staphylococcus aureus can infect the area. Allergies can lead to paronychia by causing irritation and inflammation, which makes the skin more susceptible to infection.

In contrast, while fungus can cause nail infections, it is not typically recognized as a direct cause of paronychia. Instead, fungal infections usually manifest as separate conditions affecting the nail itself, rather than the skin surrounding it. This distinction is crucial because it highlights that paronychia is primarily associated with trauma, bacteria, and sometimes allergic reactions, rather than fungal infections. Understanding these distinctions helps in accurately diagnosing and treating the condition.