The main causes are: 1. The skin around the nail, including the nail bed (the part where the nail grows) is slightly damaged. 2. Poor spleen, stomach and digestive system, thus causing some micronutrient or vitamin deficiency. White spots or mica-like on the nails indicate a deficiency of trace elements such as calcium and silicon, and parasites, and such people are prone to hypersensitivity, irritability and habitual constipation. These phenomena are mostly found in children aged 8-12 years old, and adults can also appear. 3, some fungal infections, ascariasis, syphilis and other diseases may also cause dotted white nail. Therefore, you should pay attention to your baby not to have the bad habit of nail chewing, wash your hands regularly, feed reasonably, have a balanced diet, do appropriate outdoor activities and enhance your physical fitness, then you may not have white nail spots. Of course, if your white spots are with primary disease, it is recommended to promptly diagnose and treat the primary disease!