What are Beau's lines indicative of?

Beau's lines are visible depressions that run horizontally across the nail plate. They are indicative of a temporary disruption in nail growth, often due to illness or physical trauma. When the body undergoes significant stress, whether from systemic illness, malnutrition, or injury, the normal growth of the nail can be interrupted, leading to the formation of these grooves.

Understanding that Beau's lines represent a specific physiological response helps in identifying underlying health issues, making it an important observation for nail technicians. Healthy nail growth, thinning of the nail plate, and infections beneath the nail do not typically lead to the formation of these horizontal lines, making them distinct indicators of past stressors affecting the individual's overall health. Recognizing and interpreting such signs can provide valuable insights in both beauty and health contexts within nail care.