![REQUEST] I've had this black line on my nail for almost 2 months. Does anyone know what causes it? It doesn't hurt at all. It just appeared one day. : r/TheGirlSurvivalGuide REQUEST] I've had this black line on my nail for almost 2 months. Does anyone know what causes it? It doesn't hurt at all. It just appeared one day. : r/TheGirlSurvivalGuide](https://external-preview.redd.it/FJGO4Dp16y_wXsd9eoiRovt7cmsMdr9l7kNyg-3NYLE.jpg?auto=webp&s=d142bf9bb6d4015cc70963b689d5806dbd74746a)
REQUEST] I've had this black line on my nail for almost 2 months. Does anyone know what causes it? It doesn't hurt at all. It just appeared one day. : r/TheGirlSurvivalGuide
![Black Lines Under Finger Nail - Horsehair Nematomorpha Parasite - Morgellons - Thread - Hook Worm - YouTube Black Lines Under Finger Nail - Horsehair Nematomorpha Parasite - Morgellons - Thread - Hook Worm - YouTube](https://i.ytimg.com/vi/LOJwa1MvVlg/mqdefault.jpg)
Black Lines Under Finger Nail - Horsehair Nematomorpha Parasite - Morgellons - Thread - Hook Worm - YouTube
![What causes vertical Dark lines on the nails? ➞【Discover Vertical black lines on fingernails causes】 - YouTube What causes vertical Dark lines on the nails? ➞【Discover Vertical black lines on fingernails causes】 - YouTube](https://i.ytimg.com/vi/AZjtu8_Y98w/mqdefault.jpg)