Which condition is characterized by visible depressions on the nail plate?

The condition characterized by visible depressions on the nail plate is known as Beau's lines. These lines can occur as a result of temporary interruptions in nail growth due to various factors such as physical trauma, illness, or severe stress. When the nail matrix is affected, it can cause a noticeable groove to form on the nail as it grows out. Each line typically represents a specific period of disruption in nail growth, making it a key indicator of underlying health issues or events that influenced nail development.

In contrast to Beau's lines, eggshell nails are thinner and more fragile, whereas a hangnail refers to a piece of skin that has torn around the nail, and leukonychia appears as white spots or lines on the nails, typically caused by minor trauma or infection. Understanding these distinctions helps in accurately assessing nail conditions and promoting proper nail health.