Does skin cancer always show on the surface of the skin?

IM FAIR SKINNED AND HAVE MANY MOLES AND HAVE USED TANNING BEDS IN THE PAST.IM 23 W/ NO HEALTH COVERAGE.I WAS WONDERING IF SKIN CANCER ALWAYS DEVELOPS AND SHOWS ON THE SKINS SURFACE OR IF IT STARTS ANOTHER WAY? WHAT IM TRYING TO SAY IS, IF A MOLE WERE TO DEVELOP CANCER WOULD I BE ABLE TO TELL QUICKLY SINCE IM ALWAYS CHECKING MY SKIN?

Skin cancer generally develops in the epidermis (the outermost layer of skin), so a tumor is usually clearly visible. This makes most skin cancers detectable in the early stages.

It would always show up on the skin, but it might not always be in an area that you could easily see, such as your back. If you are genuinely concerned that your risk-taking behavior has put you at risk there are specialists who can prepare what they call a"mole map" for you which can not only diagnose any problems but can pin-point any which may have to be watched and keep track of them. This service is run by qualified dermatologists and oncologists and is highly recommended for somebody like you.

not always