Vertical lines on toenails are mainly caused by excessive working hours, insufficient sleep, and overuse of the brain. In this case, it is necessary to ensure a certain amount of sleep time and quality of sleep. If black vertical lines appear on toenails, it may be a sign of liver dysfunction and toxin accumulation in the body. If the vertical lines are blue, it indicates that the body is hypoxic, which may be a sign of lung infection such as pneumonia.
1. Vertical lines on nails are commonly seen in people who stay up late frequently, lack sleep, or are partial to certain foods, leading to a monotonous diet and a lack of trace elements.
2. In traditional Chinese medicine, it is often attributed to qi and blood deficiency or stagnation of liver qi. When vertical lines appear on nails, one should pay attention to resting more, ensuring sufficient sleep and nutrition, maintaining a balanced diet with adequate intake of vitamins and trace elements.
3. Some pigments, solvents, and permeation enhancers in nail polish can also lead to the appearance of vertical lines on nails. Additionally, chronic eczema, lichen planus, hypothyroidism, and peripheral circulatory disorders may also cause vertical lines on nails. In such cases, it is recommended to seek medical attention promptly.
4. Black vertical lines and uneven nails that occur on multiple nails may be a sign of liver damage. The liver is the organ that detoxifies the body, and when toxins cannot be metabolized, they accumulate in the body, affecting the condition of the nails.
5. However, not all patients with liver disease will exhibit similar symptoms. The mere appearance of vertical lines on nails alone cannot determine whether the body is suffering from a disease.
