2) White Spots
The white spots on your nails are called leukonychia. They are quite common, and they are most often caused by injuries to the base of the nails, usually by manicure or by hurting your nails through knocking or banging. They can be an allergic reaction to nail products, and they can also be an indication of a mild infection. More often than not, they’re a nutritional deficiency. But you cannot discount the fact that white spots on nails also can be a sign of liver or kidney disease.