The difference between melanoma and nevus

Melanomas differ from moles in four aspects: margin, asymmetry, color, and diameter. First, melanoma has irregular edges and jagged changes; the edges of moles are smooth and clearly demarcated from the surrounding skin. Second, the two halves of moles are symmetrical, while melanomas are normally asymmetrical. Third, moles are generally brown, brownish black, or black, while melanomas are brown or brown, mixed with other colors such as white, blue, and pink. Fourth, the diameter of the mole is generally less than 5mm; and the diameter of the melanoma is normally greater than 5 mm. The above four aspects are the main difference between the mole and the malignant melanoma. It is necessary to clarify whether it is melanoma or mole. It is best to go to the dermatology department of the hospital.