White spots on nails can be normal or caused by minor trauma, nail fungus or nutritional deficiencies. 1. Normal situation: white spots can be seen in normal people’s nails, which are often rare, and can also be caused by local minor trauma to the nails. 2. Nail fungal disease: when the dermatophytes invade the nails, it can cause the disease, in which the white superficial type can make the superficial layer of the nail plate appear point-like or irregular white turbidity. 3. Nutritional deficiency: when the body lacks trace elements or vitamins, it can cause white spots on nails. If the white spots on nails appear alone, there is no need to panic, if there are abnormal changes in the nails and accompanied by physical discomfort, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, and comply with the doctor’s instructions on the cause of the symptomatic treatment.