What causes itching moles?

Nevus can also be called nevus cells or melanocytic nevus, which is a benign tumor on the skin caused by the increase of melanocytes in the epidermis and dermis. Nevus generally has no symptoms of discomfort and will not affect the health of the body. If the mole itches, or the mole grows faster, accompanied by pain, or even fluid exudation, or bleeding scab and other performance, it is likely that the mole shows cancer, in this case should immediately go to the hospital for examination, if necessary, treatment, if not timely treatment, will show regional lymph node swelling and other serious symptoms, even life-threatening.