What can cause discoloration of nails?

Discoloration of nails can indicate a range of health issues, as it is often a reflection of systemic conditions or circulation problems in the body. For example, systemic disorders like liver disease, heart disease, or respiratory issues can affect the oxygenation and nutrient supply to the nails, leading to changes in their color. Additionally, poor circulation can result from various conditions, potentially causing nails to appear pale, bluish, or even brownish, depending on the underlying issue. This reflects how the body's overall health directly affects nail appearance, thus making it important for manicurists to understand these connections.

In contrast, while excessive filing, cheap nail polish, and overexposure to water can impact the surface appearance and integrity of the nails, these factors tend to cause changes that are more superficial, such as chipping or thinning, rather than systemic discoloration. Understanding the deeper implications of nail discoloration helps in identifying potential health concerns that may require further investigation beyond cosmetic treatment.