Asymmetry is a common problem faced by many people with the risk of melanoma. The disease begins with the fluctuations in the body structure. They are usually visible, not only sensitive. As a rule, the changes are the appearance of dark rash or irregular mole. Of course, moles can be a normal health condition in case they are round. Try to match the bottom of the mole to see whether the divided parts are equal. If they are, it means they are symmetrical. Asymmetry is the initial and most terrifying symptom. It is the sign of a bad tumor.