Nail vertical lines specific reasons can be seen in a variety of cases, the specific reasons are as follows. 1, physiological reasons. More than nails vertical stripes are normal physiological conditions, there is no physical abnormality. May not be treated if it does not particularly affect the aesthetic appearance. 2, the nail itself caused by disease, such as common nail groove inflammation, fungal infectious diseases, eczema, dermatitis and so on. 3, the patient’s poor mental state caused by, especially long-term late night overtime work, malnutrition, excessive fatigue, overuse of the brain and so on, there will be vertical nail lines. 4, nail streaks can also reflect the heart, brain, lungs, liver and other corresponding organ system diseases. This shows that the cause of vertical nail stripes should be analyzed in specific cases, combined with clinical symptoms and physical condition of comprehensive judgment.