A palmar mole may worsen, but it may not. The probability of palm nevus worsening is uncertain. Palm nevus is actually pigmented nevus, and pigmented nevus is a kind of common benign tumor that exists on the skin. Normally there is no pain or self-conscious symptoms, and it is usually not cancerous, but it may be cancerous because the palm of the hand has more contact with the outside world, and contact and friction can easily lead to deterioration. If there is a sudden increase in the size of the mole, darkening of the color, pain or itching, erosive ulcers on the surface, bleeding or swelling and other symptoms, it is necessary to consult a doctor for examination in order to avoid deterioration, and to avoid excessive friction and stimulation in general. It is recommended to go to the hospital in time to find out the cause of the abnormalities of the mole in the palm and treat it under the guidance of the doctor, and it can be removed by laser or surgical methods.