White Spot on Nails.

White spots on nails, also known as leukonychia, are often harmless and can occur for various reasons. Here are some common causes of white spots on nails:

1. Trauma: The most common cause of white spots on nails is minor trauma or injury to the nail bed. It could be from banging or hitting the nail against something, which can cause small air bubbles to get trapped and appear as white spots.

2. Nutritional deficiencies: Deficiencies in certain nutrients, such as zinc, calcium, or vitamin D, can manifest as white spots on the nails. However, white spots alone are not definitive indicators of nutrient deficiencies and are usually accompanied by other symptoms.

3. Fungal infections: Fungal infections of the nails, such as onychomycosis, can cause white spots or patches. These spots may spread and cause the nail to become discolored, thickened, or brittle.

4. Allergic reactions: Some individuals may have an allergic reaction to certain nail products, such as nail polish, nail hardeners, or nail polish removers. This can lead to white spots or discoloration on the nails.

5. Psoriasis or eczema: Conditions like psoriasis or eczema can affect the nails and cause white spots or other nail abnormalities.

6. Medical conditions: Certain medical conditions, such as liver disease, kidney disease, or thyroid disorders, can occasionally result in white spots on the nails. However, these conditions usually have other accompanying symptoms as well.

7. It's important to note that in most cases, white spots on the nails are harmless and will grow out over time as the nail grows. However, if you notice persistent or worsening symptoms, or if the spots are accompanied by other concerning nail changes, it's advisable to consult a healthcare professional or dermatologist for proper evaluation and diagnosis. They can help identify the underlying cause and recommend appropriate treatment if necessary.