There are many reasons for toenail loss: first, consider whether it is due to local trauma, mostly due to local crushing injuries or external smashing of the toe, resulting in bruising of the nail bed injury, affecting the blood supply to the toenail, and gradually the nail bed and toenail gradually peel off. Secondly, it is also possible that the toenail may be stunted or even peeled due to malnutrition. For example, B vitamin deficiency, calcium deficiency, and lack of other trace elements. In addition, if the nail tissue of the toenail becomes infected with fungus, the toenail thickens and flakes off, or if a local bacterial infection occurs, the toenail may fall off. In a few cases, the toenail may also fall off secondary to other systemic diseases, such as nail bed damage secondary to diabetic foot and epidermolysis bullosa.