The causes of red moles on the body are inconclusive in scientific research, and so far there is no accurate data in this regard. In general, red moles on the body are benign tumors that do not affect the body and do not require treatment. Most patients can be cured by these treatments, such as surgical excision, cryotherapy, laser treatment and isotope treatment. If skin nevus is often rubbed, stimulated or exposed to ultraviolet light, it will easily become malignant. If a skin nevus becomes malignant, it will become melanoma or basal cell carcinoma, so early surgical excision can prevent it from happening.