What happened to a black mole that suddenly appeared on my face?

If a mole suddenly appears on your face, it is very likely caused by melanin deposition caused by long-term exposure to strong sunlight. In this case, it is a benign disease and does not require treatment; but you must also be alert to the possibility of malignant changes in the mole, such as itching, ulcers, etc. In this case, you must first conduct a pathological analysis to determine the condition, and then perform surgical removal or laser radiation.

1. What happened if a black mole suddenly appeared on my face?

Black nevus, also known as nevus cell nevus and melanocytic nevus, is a benign disease characterized by color changes of the skin and mucous membranes due to the proliferation of nevus cells and the production of pigments. Pigmented nevus maintains a stable state for a long time and does not recur after surgical removal. But be careful as a very small number of pigmented nevi may become malignant. It can be caused by many reasons and there is no definitive answer yet. It is generally believed that the occurrence of moles is related to genetic factors and environmental factors, mainly ultraviolet rays.

2. 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.

3. Prevention of moles

No treatment required. Pay attention to pigmented nevi on the nail bed. Do not stimulate them casually or apply corrosive drugs indiscriminately to avoid inducing malignant changes. 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 and breaks on the surface, and satellite lesions appear around it, it indicates that the mole has signs of malignancy and should be surgically removed and pathologically examined.

4. Common methods of removing moles

1. Electric burning method

Method: Use the principle of electric high-temperature burning to remove the mole by burning and carbonization.

Advantages: Easy to operate.

Disadvantages: It is difficult to control the degree of burning, it is easy to leave scars, and it is not accepted by people.

Indications: It is effective for shallow combined nevi and deeper and raised compound nevi, and for nevi with a diameter of 0.3-0.5 cm.

2. Surgical resection

Method: Surgical removal of the diseased tissue around the mole.

Advantages: This method can choose to partially or completely remove the diseased tissue, and different treatment methods can be used depending on the nature of the mole.

Disadvantages: It is difficult and time-consuming, so this method is rarely used for common moles.

Indications: Large, raised moles with a diameter greater than 0.6 cm.

3. Chemical corrosion

Method: Generally, a 50% concentration of trinitrocarbonic acid solution or alkaline agents such as sodium hydroxide are applied to the mole.

Advantages: Tricarbonic acid solution is not easy to burn the skin and cause scars; alkaline solution is highly corrosive and may take effect quickly.

Disadvantages: The effect of trinitrocarbonic acid solution is slow, and deeper moles may need to be treated 10 times; the corrosion depth of sodium hydroxide is not easy to control and may cause deep scars.

Indications: Moles with lighter color and shallow location.