Vertical lines on the nails of women are a common phenomenon. If the vertical lines on the nails are small, they are a normal nail disease and do not need to be worried or treated. However, if the vertical lines on the nails suddenly increase in the near future, or become particularly rough and uneven, it is important to pay attention to the following factors: 1, the body lack of vitamins related to the lack of vitamin A or calcium deficiency; 2, life is too tired, emotional tension, poor sleep; 3, chronic liver disease, kidney disease, rheumatism, etc., may also appear nail vertical lines aggravated; 4, Skin inflammation around the nail, such as the appearance of eczema and other skin diseases, may also lead to nail bed perinail damage, resulting in malnutrition of the nail and the appearance of skin vertical lines. This is the category of nail dystrophy; 5. If the skin vertical lines are accompanied by deepening pigmentation, a black or brown thing will appear on the skin, it is necessary to draw attention to the possibility of nail nevus, nail melanoma and other diseases, and you need to go to the hospital to find a professional doctor for diagnosis.