What's the matter with the black mole on the back of the hand?

Research has found that there are many reasons for the appearance of moles on the back of the hands. One is the differentiation of large nevus cells in the skin, the second is caused by pigmentation, and the third is a compound nevus that enters the dermis. Experts say that if it is general pigmentation, no special treatment is needed and it will not harm the body. However, if the surrounding area is irregular and there are symptoms of itching or ulceration, special attention should be paid and effective treatment must be carried out.

1. Causes of black moles on the back of the hand

1. Intradermal nevus is differentiated from large nevus cells, which are more mature small nevus cells and enter the dermis and surrounding connective tissue.

2. Junctional nevus: nevus cells are located at the junction of the epidermis and dermis, in the form of multiple nests with clear boundaries and uniform distribution distances; the upper half of each nest is in the bottom layer of the epidermis, and the lower half is in the superficial layer of the dermis. These nevus cells are large and darkly pigmented.

3. In the process of nevus cells entering the dermis, compound nevus often has both intradermal nevus and residual junctional nevus, which is a mixed form of the above-mentioned vehicle-type nevus.

Principles of treatment of moles

Most benign melanocytic tumors do not require treatment. The general principle is to treat them thoroughly if possible.

1. Ordinary acquired pigmented nevus and ordinary blue nevus do not require treatment. If they occur in areas prone to friction and damage, surgical removal is best. Small skin lesions can also be treated with ultra-pulsed CO2 laser and (or) Q-switched laser. It is difficult to control the depth of ordinary CO2 laser, freezing, ultra-high frequency electricity, chemical peeling, etc., and they are prone to leave scars or incomplete treatment.

2. Try to remove the tumor surgically if possible. Since malignancy usually occurs after the age of 30, the removal can be performed after adulthood.

3. Treatment of congenital giant nevus: Since the rate of malignant transformation is high and half of the malignant transformation occurs before the age of 5, it should be removed as soon as possible after birth.

4. If malignancy is suspected, surgical treatment should be adopted. All removed moles should be subjected to pathological examination. If malignancy is found, the resection should be expanded and treated as appropriate.

3. Treatment measures for moles

No treatment is usually required. Pay attention to pigmented nevi on the soles of the feet and nail beds. Do not stimulate them casually or apply corrosive drugs indiscriminately to avoid inducing or irritating their malignant transformation. If a mole rapidly increases in size within a short period of time, its color deepens and turns black, its edges become red and irregular, it bleeds or is damaged on the surface, and satellite lesions appear around it, it indicates that the mole has signs of malignancy and should be surgically removed and sent for pathological examination.