Raised fleshy moles may be the result of sebaceous nevus, seborrheic keratosis, epidermal nevus and other disorders, and are not necessarily harmful, but if they have a tendency to become malignant, changes such as skin ulceration and bleeding may occur. Usually, raised meaty nevi are benign diseases and generally do not require special concern. However, if localized malignant changes occur, they may be harmful to the organism. The precursors of malignant changes include obvious changes in the shape and color of the mole, such as its shape becoming larger, more prominent, irregular, and more than 2 colors or darkening, etc. The lesions may develop with symptoms such as ulceration, bleeding, itching, and pain. If the above symptoms appear, it is considered that the disease has a tendency of malignant transformation, and it is recommended that the patient go to the regular hospital for consultation to clarify the cause.