Maria Sylvia revealed that she first noticed the dark brown mark ten years ago, but did not think about it, as she was “in and out of doctors all the time” because she was an athlete. Maria was informed that the condition under her nail was “most likely cancerous for the last three years”. Her doctors said it was sublingual melanoma, a serious form of skin cancer that affects the skin under your fingernails. TikToker – which has more than 15,000 followers – has decided to share its unique health story, which has now been watched millions of times. He told the @invrfoundwaldo page: “No one really noticed until a doctor noticed it once. That was probably around 2014, and it was like, “oh, this is weird.” “But you do not really match the demographics.” Maria, from the USA, underwent surgery in which the doctors removed her fingernail and part of her bone. He said: “Melanoma can sit in a stage called in situ, which looks like stage zero, for up to 13 years. “So it is very possible that this has been happening for 10 years and it may be cancerous the last three, it is a bit difficult to say.” When she woke up, she had a cast covering her entire arm and stopped her thumb from moving as she recovered. Maria was given a skin graft on her thumb, with doctors taking flesh from her hand. Now he is waiting to see what the final result will be. This video, which has reached 14 million people, has left viewers worried about their own similar series. Medical advice warns that you should go and see a doctor if you see a change in the size, color or shape of your nails. Maria after surgery after doctors “wiped” her nail (Image: @ invrfoundwaldo / TikTok) If your nail separates from the nail bed, bleeds, thins or cracks or has bruises that will not go away – it could be a sign that something is wrong. Melanoma is the worst form of skin cancer and is usually caused by exposure to UV rays. But if caught early, it has a good survival rate with 90 percent of people surviving if cancer is diagnosed early. There are still more than 2,000 melanoma skin cancer deaths in the UK each year. Do not miss the latest news from all over Scotland and beyond – Subscribe to our daily newsletter here.