sentence: Some people paint their nails to make themselves look nicer.
sentences_before: Like hair, fingernails never stop growing. They must be cut from time to time. It does not hurt when you cut your nails. The nails are made up of a protein called keratin. Hair and skin also have keratin.
sentences_after: Some fingernails can grow into the skin. This is called an ingrowing fingernail. They can hurt, so are often treated through medicine.
concept_name: people
headings: Fingernail
categories: Limbs and extremities Integumentary system