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.
nails, thumb
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.
I believe they grow faster.
it made of cut nails
They both have nails.
Thumb tack
Sucking your thumb can potentially affect the alignment of your teeth and the development of your jaw if done excessively or for a long period of time during childhood. It can lead to issues with bite and tooth positioning. It is advisable to encourage children to stop sucking their thumb by the age of 5 to minimize any negative effects on dental and facial development.
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.