A bulging edge of the fingernail may be a concave nail, which is a nail that is concave in the center and bulging at the edges. Concave nails are a relatively common nail deformity and can be a clinical manifestation of a variety of diseases, such as iron deficiency anemia, fungal infections and other diseases.
1. Iron deficiency anemia: it is anemia caused by iron deficiency, iron absorption disorder or increased iron demand, which can be manifested as pale skin, fatigue, thinning nails with bulging edges and other symptoms.
2. Fungal infection: the more common is onychomycosis, i.e. “gray nails”, which can be divided into white superficial, distal lateral subnail type, proximal subnail type, in-deck type, etc. Infected nails can turn yellow, and the surface of the nails may be uneven or the edge of the nails may be bulging.
If the edge of the fingernail is bulging, you don’t need to worry too much, you can observe it first, but when it is combined with other symptoms or affects your life, you should go to the hospital for checkups, and follow the doctor’s instructions for treatment in a timely manner.