Scalloped nails may be associated with vitamin and trace element deficiencies and are corrected by dietary modifications and medication. Scalloped nails are a symptom of nails that have a scalloped shape. These nails are narrow at the bottom and wide at the top, with curved ends, and can be adjusted in the following ways: 1. Dietary adjustments: fan-shaped nails are generally related to the lack of vitamins, trace elements, should actively adjust the diet structure to ensure balanced nutrition, increase the amount of high-quality proteins, while eating more food rich in vitamins, trace elements, but also increase the amount of calcium-rich foods, such as milk, fish, shrimp, etc., which can help to replenish the trace elements, thereby alleviating the symptoms. 2. Medication: It is recommended to go to the hospital for vitamin and trace element tests, if there is a lack of vitamin or trace element, you can take the lack of vitamin or trace element under the guidance of the doctor, and after active supplementation, the scalloped nails can be gradually grown and repaired. Scalloped nails have other causes, it is recommended to go to the hospital in a timely manner, according to the cause of targeted treatment, to avoid delays in the condition.