The early manifestation of melanoma is a flat, pigmented rash that is irregular in shape, unevenly pigmented, and asymmetrically distributed.
Melanoma is mostly caused by the malignant transformation of pigmented nevus. In the early stage, the pigmented nevus will become asymmetric from symmetric; its boundary will become irregular from regular, or it will be geomorphic or wavy; its color will change from normal fleshy brown to dirty black; its diameter may be more than five millimeters, and it will increase rapidly within a short period of time, and then it will break out and bleed.
Therefore, when the skin pigmented nevus appears to increase rapidly in size within a short period of time, deepen in color within a short period of time, and break down and bleed severely within a short period of time, please go to the hospital for examination in a timely manner and follow the doctor’s instructions for treatment, so as to avoid deterioration of the condition.