What is a small pit on fingernails?

Small pits appear on the nails, which may be caused by the lack of trace elements in the body, may also be caused by anemia in the body, you can go to the hospital for blood tests, if anemia can take polysaccharide iron capsules, lack of trace elements can be oral multivitamins. In addition, there may be skin diseases caused, such as psoriasis. Nail ringworm when there will be such symptoms.