손톱에 '검은줄'이 피부암일수도?! 이 방법으로 즉시 감별해보세요! (흑색조 감별법)

#Melanonychia #Blacknail #Melanoma The dark lines on fingernails or toenails!!! They are called melanonychia. What causes melanonychia around the nails? While there are different causes, melanonychia turns out to be melanoma in some cases. Most diseases can be treated faster and better by detecting them in the early stages. Find out about the causes of melanonychia and several signs of melanoma. Check out the video and take a look at your nails!!!