Black raised moles on the areola may be caused by pigmented nevi, melanoma, flat warts and other reasons. 1. Pigmented nevus: originating from melanocytes, it is generally a benign skin tumor caused by congenital factors, hormone level changes, immunosuppression and other factors. Generally, it is due to the abnormality in the process of melanocyte migration to the epidermis, which leads to the abnormal gathering of melanocytes, thus producing pigmented nevus. 2. Melanoma: If the nevus is accompanied by short-term enlargement, itching, skin lesions and other symptoms, consider the possibility of melanoma, which is a malignant tumor originated from melanocytes with high malignancy. 3. flat warts: when the skin mucous membranes appear tiny breaks, HPV (human papilloma virus) into the epithelial cells to proliferate, resulting in epithelial cells abnormal differentiation and proliferation, caused by epithelial benign superfluous. If you have a black raised mole on your areola, please do not self-medicate, it is recommended to go to the hospital for examination, diagnosis and treatment under the guidance of a doctor.