What are the main causes of nail fungus?

The main causes of nail fungus are as follows:

1. Infection: Some nail fungus patients also have athlete's foot, leading to the invasion of nail fungus, causing the onset of nail fungus.

2. Poor nail nutrition: Some individuals suffer from malnutrition due to other medical conditions, leading to a situation of poor nail nutrition. Once the nail experiences poor nutrition, its ability to resist bacteria decreases, making it more susceptible to nail fungus.

3. Trauma: Injuries to the nail weaken its resistance and can lead to nail fungus.

4. Chemical irritants: Prolonged exposure to substances such as paint, gasoline, and detergents due to work requirements can easily alter the normal acidity and resistance of the nail surface, leading to nail fungus.

5. Environmental factors: Prolonged exposure to excessively humid or hot environments can prevent the nail from coming into contact with outside air, making it susceptible to bacterial growth and invasion, resulting in nail fungus.

Nail treatments can also lead to nail fungus. During nail treatments, women often use files to polish the nail surface and other tools to remove calluses around the nails, which can cause damage to the nail plate, leading to infection and fungal invasion, resulting in nail fungus.