What is a common indication of an infection in a nail salon?

A common indication of an infection in a nail salon is the presence of redness and swelling around the nails. This condition often suggests inflammation or an immune response to a bacterial or fungal infection. When a client experiences these symptoms, it may indicate that the skin surrounding the nail has been compromised, possibly due to improper techniques during manicure or pedicure services, unclean tools, or pre-existing conditions exacerbated by salon treatments.

While thickening of the nail, changes in nail color, and splitting nails can occur due to various factors including trauma, nutritional deficiencies, or other health issues, they are not as immediate or distinct indicators of an active infection. Redness and swelling generally prompt a more urgent examination and response, making this answer the most accurate choice for identifying an infection in a nail salon environment.