Watch: A US Dermatologist Explains Why A Dark Vertical Line on Your Nail Is Something You Should Never Ignore

White stains or patches on the nails are typical. They usually don’t hurt anyone. Such spots may be caused by a variety of factors, including a lack of certain nutrients, such as protein, calcium, zinc, vitamin A, iron, magnesium, salt, and copper. However, not every nail mark is so light. There’s another indication that you should get to the doctor right away if you notice it. A physician cautioned against this, saying that being irresponsible may land you in serious danger.


The video went viral as soon as US-based Dr. Lindsay Zubritsky uploaded it on social media sites like Instagram and TikTok, according to an article in the New York Post. She instructed her followers in the 48-second video to see a doctor to have any black vertical lines running down their nails looked out. This might be an indication of subungual melanoma, an uncommon kind of skin cancer. Even though it’s uncommon, this kind of skin cancer is dangerous, so anybody who discovers it should go to the hospital right away.

This can be a very dangerous kind of skin cancer, she continued. It represents just 0.7% to 3.5% of all malignant melanomas around the globe. The cancer’s stage upon diagnosis and the extent of its spread will determine a patient’s chances of survival.

Although the precise source of subungual melanoma remains unknown, sun exposure is not the cause of the condition. An individual is more vulnerable if there is a family history of this illness. Although it may sometimes occur on the fingers or toes, the big toe is the site of this subungual melanoma.

The Verywell Health article states that most individuals confuse it for a fungal condition. However, these stripes of black or brown on the nails might be lethal. Not all black streaks on the nails are indicative of skin cancer, but if the line is light and the spot seems soft, you should certainly get it evaluated.

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