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

The identification of a fungal nail infection is often characterized by specific changes in the appearance and texture of the nails. Discoloration, thickening, and possible separation from the nail bed are classic signs of a fungal infection. As the infection progresses, nails may become discolored—often yellowish or brown—and experience changes in thickness as the fungus disrupts normal nail growth. Additionally, separation from the nail bed indicates that the infection has led to damage in the attachment of the nail, a common consequence among those suffering from fungal issues.

Other options highlight different nail conditions that may not necessarily indicate a fungal infection. For instance, pitting and white spots are more frequently associated with conditions like psoriasis rather than a fungal issue. Brittleness and flaking can indicate dryness or other non-fungal related conditions, while redness and swelling are more acute inflammatory responses that may occur with various infections but do not specifically point to a fungal nail infection. Understanding these distinctions is crucial for accurate diagnosis and effective treatment in nail technology.