What condition is caused by repeated trauma to the nail matrix?

Beau's lines are horizontal grooves that can appear on the nails as a result of various factors, including repeated trauma to the nail matrix. These lines occur when there is a temporary disruption in the growth of the nail plate due to injury or stress, which causes the nails to grow in an irregular pattern. When the trauma to the matrix stops, nail growth resumes, resulting in the visible indentations or grooves that characterize Beau's lines.

Understanding this condition is important, as it reflects the health of the nail matrix and can indicate other underlying health issues or stressors that the body has experienced. This highlights the significance of proper nail care and the need to recognize any changes in the nail's appearance as potential signals of trauma or other medical conditions.