Toenails can grow back when they fall off without damaging the nail matrix. On the contrary, it is difficult to grow out.
1. Damage to the nail matrix: when the toenail is traumatized (e.g., extrusion injury) resulting in the loss of the toenail, if the nail matrix area is significantly damaged, it is difficult to grow the nail.
2. Uninjured nail matrix: for example, nail psoriasis, nail fungus, nail dysplasia or nail peeling and other diseases, can lead to toenail loss. However, because the nail matrix has not been damaged, so when the original disease is cured, you can also grow a healthy toenail.
Therefore, when the toenails fall off, it is recommended to go to the hospital in a timely manner, to clarify whether the nail matrix is damaged, and then follow the doctor’s instructions for targeted treatment.