I just got a birthmark. anyone know?

I would enjoy knowing a person's age to see how we can help them. If you're under 17 tell your parents. If you over 18 than seek medical advice. The only way to ever determine skin cancer is if the mark is larger than a pencil eraser. Its raised to a bump bigger than an average zit/acne. These skin marks you see are what we call moles, skin tags or blimishes.