Under what condition should a manicurist refrain from giving a manicure or pedicure?

A manicurist should refrain from giving a manicure or pedicure if a client has ringworm. This condition is caused by a fungal infection that affects the skin and can spread easily, particularly in communal settings such as salons where tools and surfaces might come into contact with infected areas. The presence of ringworm poses a risk not only to the infected individual but also to other clients and the manicurist themselves.

In contrast, while the other conditions mentioned, such as pedis, onychophagy (nail-biting), and hangnails, can be uncomfortable or unsightly, they do not represent the same level of contagious risk as a fungal infection like ringworm. Therefore, it is critical for a manicurist to prioritize hygiene and the health of all clients by postponing services in the presence of ringworm.