From the case of a poster warning of health information stating The thumb nail has a vertical line. It is a warning sign that the liver is toxic. The Institute of Dermatology, Department of Medical Services, Ministry of Public Health reviewed the information and clarified that An abnormal nail that looks like a vertical black or brown line on the front of the nail. It is a disorder known as Longitudinal melanonychia that manifests itself differently in different people. The color may range from light brown to dark brown. May be black, may be consistent or uneven The size is possible from a small mark, less than 1 millimeter, to a black patch on the whole nail. and there may be only one line multiple lines It depends on the cause that caused such symptoms.
In the case of having a single line, it may be caused by a mole at the base of the nail. Or melanoma skin cancer, etc. For cases where there are multiple lines, it is usually caused by the activation of the melanin cells to work abnormally, such as causing injury to the nails. Some drugs such as zidovudine chemotherapy or certain diseases, etc., as well as may be found normally in people with dark skin as well If there is a brown line on the nail that has no clear boundaries uneven color is larger than or equal to 3 millimeters, or there are other symptoms besides the brown line on the nail, for example, there is a change in the nail surface Abnormally distributed pigment at the edge of the nail, a wound, a lump, or easily bleed Should see a specialist doctor to receive a diagnosis by cutting a biopsy for pathological examination. for further accurate diagnosis and treatment
So please don’t be fooled by people. and ask for cooperation not to send Or continue to share such information on various social media channels and for the public to receive news and information from the Institute of Dermatology, Department of Medical Services can be followed on the website www.iod.go.th or call 02-354-5222