Blue, blue-gray or blue-black pimples

Common blue nevus is common in females, and is usually acquired. It occurs at an early age and occurs on the face and limbs, especially on the back of hands and waist and hips. The skin lesions are mostly single, even or several, often no more than 1 cm in diameter, appearing as gray-blue or blue-black nodules, rounded, solid in texture, and can be fused into slices with clear boundaries. It appears as blue, blue-gray, or blue-black pimples. It can occur anywhere, but half of it occurs on the back of the hands and feet. This type of blue mole is generally not malignant. It is a clinical manifestation of blue mole. Blue nevus is also known as benign mesenchymal melanoma, blue neuronevus, chromatophoroma, melanofibroma, benign mesenchymal melanoma or Jadassohn -Tieche blue nevus is a benign tumor composed of blue nevus cells. There are three types of blue mole: ordinary blue mole, cellular blue mole, and combined blue mole. Common blue moles have large lesions, often progress, and occasional benign metastases. It can be born or it can appear after birth. In addition to being common in the skin, it can also occur in the oral mucosa, cervix, vagina, seminal cord, prostate, and lymph nodes. Blue moles may be malignant.