(1) The surface of the vertical nail is not smooth enough, and a straight line appears, which usually appears after overwork and excessive brain use; These vertical stripes will appear obviously in the case of insufficient sleep. If vertical stripes persist, it may be a chronic disease of internal organs. If not nursed back to health, with the development of the disease, nails will become uneven and even crack.
(2) The stripes on the tattooed nails are the records of the lesions that have occurred. In other words, when there are horizontal lines on the nails, there must be some lesions in the body. Generally speaking, at the beginning, the stripes are only at the bottom of the nails. With the growth of nails, it gradually moves upward, indicating that the onset time is getting closer and closer.
(3) There are a few white spots on the spotted nails, which are usually manifestations of calcium deficiency, silicon deficiency or parasitic diseases; There are many white spots, which may be a sign of neurasthenia; Yellow spots on nails may cause diseases of the digestive system; If there are black spots on your nails, be careful. The light one is just overwork and malnutrition, and the heavy one may be a precursor of gastroptosis, gastric cancer and uterine cancer.