Melanoma from a mole
You can't always tell when something is a melanoma
but if you look for the warning signs and see a dermatologist when you notice these changes, you are taking good care of yourself.
Look for sudden growth in a preexisting mole, any bleeding, change in shape, new border, asymmetry, multiple color hues, itching or pain in the mole, increase in size, etc. See a dermatologist for a total body check.