I don't know if you have paid attention, recently a topic called "a black line suddenly grew on the nail" suddenly rushed to the hot search. Many netizens have asked for help below, saying that "recently a black line suddenly grew in the nail, originally thought it was a watercolor pen print, but it actually grew inside the nail shell." "So what exactly is this black line? Do we need to worry?
Copyright pictures in the gallery, reprinting and using may cause copyright disputes
To figure this out, you have to start with the way nails grow. At the base of our nails there is a white semicircular structure, the scientific name is "A half moon". The active cells that produce nails are located under the skin at the base of the nail, called "nail matrix". The process of nail lengthening is the process of nail matrix constantly generating new nails and pushing old nails forward. That's why we have to trim our nails every once in a while.
The kind of "black line" in the nail that netizens said is from beginning to end, consistently, indicating that there is a problem with the original growth of the nail, and ah, the problem persists. There may be many reasons for this result, let's say one by one.
Copyright pictures in the gallery, reprinting and using may cause copyright disputes
The first case is because the melanocytes in the matrix are activated. Normally, our nails are white and translucent, but there are silent melanocytes in the nail matrix that produces nails. When these melanocytes are activated, they produce melanin to stain the nails. Inflammation, fungal infections, trauma, tumors, drugs, pregnancy and other factors may make the melanocytes in the nail matrix simply activate, and black lines grow in the nails.
In addition, the proliferation of melanocytes can also cause black lines to appear on the nails. The replacement of old cells by new cells in our normal body is metabolism; If too many new cells are produced, but the growth is relatively slow, the position is relatively fixed, and there is no destruction everywhere, it is a benign lesion; If the proliferation of cells is out of control, rapid replication, and colonization everywhere, it is malignant or cancerous.
Melanocyte hyperplasia that causes black lines of the nail is also a benign and malignant distinction. Common benign lesions include freckled nevi, nail nevi, etc.; If it is malignant, it is more of a nail melanoma.
Copyright pictures in the gallery, reprinting and using may cause copyright disputes
Hearing this, you should have already discovered that the possible causes of black lines on your nails are very complex. Therefore, in case we or our families are unfortunate to be recruited, we judge that there is actually a certain risk, or it is safest to go to the dermatology department for professional help.
Planning production
Review丨Lin Huan'er Chief Physician, Department of Dermatology, Shenzhen Hospital (Longgang), Beijing University of Chinese Medicine