Nail upturning is considered to be caused by external extrusion, lack of nutrition, nail fungus and other reasons.
1. external force extrusion: if the nails are hit by heavy objects, or external force extrusion, will lead to nail plate damage, and thus and local soft tissue separation, triggering nail upward symptoms.
2. Lack of nutrients: If you are picky about what you eat for a long time, or if you don’t consume enough nutrients, it will lead to a lack of micronutrients in the body, which will make the nails unable to get nutrients to nourish them, and then the symptoms of fingernail buckling will appear.
3. Nail fungus: when the nails are infected by candida, red trichophyton and other dermatophytes, these dermatophytes will release enzyme substances in the local area, which will lead to the decomposition of the nail plate, so that the nail plate will be destroyed, causing the symptoms of fingernail upturning.
There may be other reasons for the upturning of nails, so you should go to the hospital to improve the examination and clarify the cause of the disease and symptomatic treatment.