Re: Spot On Arm. Could it be skin cancer?
It's highly unlikely to be skin cancer, due to your age.
Skin cancer is very uncommon at your age.
It could, however, be a precancerous spot which might turn into cancer years down the road if you don't get it taken care of.
Therefore, you should go to the doctor, so they can examine it and remove it if it looks suspicious or like it could potentially cause problems down the road.
Best of luck.