How is onychosis defined?

Onychosis is defined as any deformity or disease of the nails, making it a broad term that encompasses various conditions affecting the nails. This includes changes in nail structure, texture, color, growth, and overall health. Understanding this definition is crucial for nail technicians, as it helps them recognize a range of potential nail disorders their clients might experience, from minor problems to significant health issues.

In contrast, the other options pertain to more specific conditions. A bacterial infection refers to an invasion of bacteria, which can lead to health problems specifically localized to the nail but does not cover the broader spectrum of nail diseases. A fungal infection is similarly specific; it only addresses conditions caused by fungi, which again is only one type of potential nail issue. A specific injury to the nail pertains to physical trauma affecting the nail, but this is just one way that onychosis can manifest. Therefore, the inclusive nature of onychosis as encompassing any deformity or disease makes this answer the most accurate and comprehensive representation of the term.