What are thin, white nails that curve over the free edge called?

Thin, white nails that curve over the free edge are identified as eggshell nails. This term is used to describe a condition where the nails become unusually thin and tend to be brittle, often appearing white or milky in color, and are flexible enough to curl or bend over the edge of the fingertip.

Eggshell nails can be the result of various factors, including health conditions, nutritional deficiencies, or excessive exposure to certain chemicals. Understanding this condition is crucial for manicurists as it requires gentle handling and appropriate care to prevent further damage to the nails.

The other terms mentioned refer to different nail issues. Agnails refer to hangnails or small pieces of skin that may tear at the base of the nail. Onychophagy is the term for nail-biting, where the person habitually bites their nails, often leading to damage and an irregular appearance of the nails. Nail furrows describe horizontal or vertical ridges in the nail plate that can indicate issues with nail health or underlying medical conditions. Recognizing and correctly identifying various nail conditions is an essential skill for a manicurist, particularly for providing proper care and advising clients on nail health.