These were often used as a form of infibulation chastity and with body jewellery not easy to get often padlocks were used in these piercings.
They heal well and have few complications.
Angel says that since these are more ornamental, she doesn't do as many of them.
As a tip, snug, supportive and not restrictive clothing will help it heal faster.
Your piercer will stop any bleeding and clean the piercing.
Infinitesimal organisms that arrive at the skin complete a break or split in the nipple skin transport about the closest adulteration otherwise called mastitis.