When black vertical lines appear on the fingernails, it may indicate that the body has given a warning signal, which is generally caused by nevus of the nail matrix or melanoma. These two diseases are not very harmful to the body. However, if there are multiple black vertical lines on the fingernails, it is likely that there are organ lesions. One should be vigilant and, apart from seeking medical attention as early as possible, the patient should maintain a good mentality and eat nutritious food to supplement the body's nutritional needs.
What causes vertical lines on fingernails? Black vertical lines on fingernails are generally manifestations of neurasthenia. Several distinct black vertical lines on the nail plate are referred to as a serious illness, and long-term vertical lines are symbols of physical weakness and bodily aging.
What diseases can cause vertical lines on fingernails?
1. Physiological manifestations. If the color of the vertical lines on the fingernails is similar to the skin and feels like there is resistance when touched, it is a normal physiological phenomenon. This is due to the movement of the nail growth area as age increases and does not indicate any disease.
2. Nevus of the nail matrix. If the vertical lines are brown or gray, and the color stripes appear in regular bands, this condition is considered as nevus of the nail matrix. If the vertical lines maintain the same size and color for a long time, the patient only needs to observe them closely.
3. Melanoma. If the vertical lines are brown and composed of irregular color stripes with uneven melanin distribution, it may indicate the presence of melanoma.
