The whitening of the root of the fingernail is most often considered to be a half-moon scar, which is a normal condition. Secondly, it may be caused by nail fungus and iron deficiency anemia and other diseases. 1. normal situation: fingernail root white may be nail half-moon scar, that is, the root of the nail crescent-shaped white traces, is the growth of the nail of the mother of the nail area, basically everyone has, belongs to the normal physiological phenomenon. 2. Nail fungus: usually manifested as nail color changes, separation and thickening, turbidity and other symptoms, nails are white, yellow and dirty color. The cause of the disease may be red trichophyton, candida and other pathogenic bacteria infected nails. 3. Iron deficiency anemia: insufficient iron intake, excessive loss of iron and other factors may trigger iron deficiency anemia, generally manifested as pale skin, dizziness and dizziness, as well as keratitis, pale nails and other symptoms. The cause of white fingernail root is not the only reason, it is recommended that patients go to the regular hospital to clarify the cause of the disease.