It is possible for a nail to grow back after it has been pinched off by a door.
For most people, after an accidental nail is squeezed by a door, the nail may be injured by the splint, which can cause symptoms of nail loss. If the growth layer at the root of the nail is not damaged and the wound does not become infected, new nails will gradually grow at the site of the nail loss over time.
It is important to note that if the nail is squeezed off by a door, causing damage to the growth layer at the root of the nail, and no attention is paid to local care, and an infection occurs, then in this case, the chances of the nail growing back are lower.
Nails are pinched off by the door, it is recommended to go to the regular hospital in a timely manner, under the guidance of the doctor standardized treatment.