its because your smoking to many cigretes
Dehydration, I think.
your teeth will be very yellow and your fingertips will be brown
Common causes of pain in the nerve endings of fingertips include injuries, such as cuts or burns, nerve compression or damage, conditions like carpal tunnel syndrome or peripheral neuropathy, and diseases like diabetes or arthritis.
To prevent your fingertips from turning yellow due to smoking, you can try quitting smoking or reducing the number of cigarettes you smoke. You can also regularly wash your hands with soap and water, use a nail brush to clean under your nails, and moisturize your hands to help reduce staining.
It can, the inflammation causes increase pressure on nerves, causing numbness in arm/fingertips
An yellow fever virus causes yellow fever.
They named it yellow fever because one of the symptoms is liver failure that causes jaundice of the skin and eyes. Jaundice causes a yellow tint.
Poor nutrition, or fungal/bacterial infection. This can also occur if you tan a lot, or use a tanning bed.
bevakoof
dirt
Trick