half white Yellow Dusky red half-moons. They note: "A disease inside your body can cause your nails to change colour. Certain colour changes can be a warning sign of a specific disease." ...

However, yellow nails could also be due to a nail infection or smoking cigarettes. Lastly, the AAD mentioned that dusky red half-moons on your nails could be a sign of various conditions including ...

half white Yellow Dusky red half-moons. They note: "A disease inside your body can cause your nails to change colour. Certain colour changes can be a warning sign of a specific disease." ...