What condition refers to fungal infections of the nail?

Onychomycosis is the term specifically used to describe fungal infections that affect the nails. This condition can lead to discoloration, thickening, and even eventual loss of the nail if left untreated. Fungal infections thrive in warm and moist environments, making the nails, particularly those of the toes, susceptible to these types of infections.

Athlete's foot, on the other hand, refers to a fungal infection of the skin, commonly occurring between the toes, which is different from onychomycosis as it does not directly involve the nails. Pseudomonas infections could affect the nails but are primarily bacterial and not fungal in origin. Dermatitis refers to inflammation of the skin, which is not specifically related to nail infections either. Therefore, onychomycosis accurately describes the condition affecting the nails due to fungal infections.