The most likely reason is a nail fungus. A nutritional deficiancy can also cause such symptoms but usually with all of the nails. A trip to the doctor might help.
Yep, I have thumbnails.
If your thumb nails are yellow, this could be because you smoke. It could also be due to problems with nutritional imbalances.
nails, thumb
I believe they grow faster.
it made of cut nails
The longest thumb nail ever recorded measured 2.51 meters (8 feet 2 inches) and was achieved by Lee Redmond from the USA. She began growing her nails in 1979 and maintained them for over 30 years. Her remarkable nails were recognized by Guinness World Records before they were unfortunately damaged in an accident in 2009.
Thumb tack
Paint thumb nail with no-bite nail polish (used to keep one from biting nails).
Actually your finger nails grow 4x faster than your toe nails!!!!!!!!spaxton21- OMG WHAT IS WRONG WITH ME? MINE IS THE EXACT OPPOSITE!!!
palm, knuckles, fingers, nails, metacarpals, phalanges, hypothenar eminence
There are several parts that make up a human hand, here are the most common, fingers, knuckles, thumb, palm, finger nails.
that you have a cut there or your sensitive to it