What does it mean to have white spots on the nails?

Sep 30, 2024 Source: Cainiu Health
Disease description:

I have had white spots on two of my fingernails for a while, but there are no other symptoms. I would like to know what causes these white spots on the nails?

Doctor's answer (1)
Dr. Liu Wenmin

White spots on the nails are commonly referred to as "leukonychia," a frequent nail abnormality. The causes of leukonychia vary and can be broadly categorized as follows:

1. Trauma: The most common cause is minor trauma, such as cutting the nails too short or the nail suffering a blow. This kind of trauma can lead to the formation of white spots in the nail matrix. In such cases, the spots will gradually move forward as the nail grows and will eventually be trimmed away.

2. Malnutrition: Long-term unbalanced diets may lead to deficiencies in certain trace elements or vitamins, such as calcium, zinc, and vitamin B. A lack of these nutrients can directly affect nail health, causing white spots to appear.

3. Fungal infection: Fungal infections around the nail can sometimes manifest as white spots, although they are usually accompanied by other symptoms such as thickening or deformation of the nail.

4. Systemic diseases: Some全身 diseases, such as kidney disease, heart disease, and diabetes, may also cause white spots to appear on the nails.

If white spots on the nails persist and are accompanied by other uncomfortable symptoms, it is advisable to seek medical attention promptly.