White spots on nails, also known as leukonychia, can have various causes. They are usually harmless and will disappear as the nail grows out. Here are some of the most common causes of white spots on nails:
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Trauma: Minor injuries to the nails, such as hitting them against a hard surface or biting them, can cause white spots to appear.
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Nutritional deficiencies: A lack of certain nutrients in the diet, such as zinc or calcium, can cause white spots to appear on the nails. However, some studies suggest that zinc or calcium deficiency does not lead to white spots on nails.
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Fungal infections: Fungal infections of the nails can cause white spots, as well as other symptoms such as thickening, discoloration, and separation of the nail from the nail bed.
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Allergic reactions: Some people may develop white spots on their nails as a result of an allergic reaction to certain chemicals or products, such as nail polish, nail gloss, nail hardener, nail polish remover, and fake nails.
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Psoriasis or eczema: Psoriasis and eczema can manifest in the nails as well as your skin, resulting in nail whitening. Nail psoriasis can also cause a variety of nail changes, including nail pitting, ridges, thickening, and discoloration. Eczema can cause Eczematous nail changes which include nail discoloration, ridges, thickening, and pitting.
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Other medical conditions: Certain medical conditions, such as liver disease, kidney disease, and heart disease, can cause white spots on nails.
Its important to note that white spots on nails can also be a sign of heavy metal poisoning from arsenic and lead. If youre exhibiting other symptoms of heavy metal poisoning, consider getting medical attention immediately.
