Melanoma is also a disease. In daily life, many people can't tell a mole from a melanoma. Many people mistake nevus for melanoma, and many people mistake melanoma for nevus. Let's understand the characteristics of black tumor. Sometimes, some moles in our body may deteriorate into black tumors, but there are some characteristics before the deterioration.

First of all, the shape is different. In daily life, we can find that most people's moles are black, and then they are mainly round or oval. If it worsens into a black tumor, the shape will change abnormally and asymmetrically, and then the edge will be irregular, and the mole will be small, while the black tumor will be large. Generally, black tumors are more than 5 mm in diameter, and some others will be produced. Generally, moles are relatively flat. If they suddenly swell and then get bigger and bigger, they may deteriorate into black tumors.

There will be faded and blurred boundaries. Melanoma is less concerned in daily life, because the incidence is relatively small, mainly because some moles that look different may deteriorate into melanoma. At present, according to some studies, black tumors are mainly related to heredity, external stimuli and virus infection. There is no way to know the specific cause of the disease, but there is another obvious feature, that is, if it worsens into a black tumor, you will find that the border next to your mole will be very unclear, there will be some fading, and some strange shapes will appear on the edge of this mole.

Besides, I can feel something myself. If you feel anything abnormal, you must go to the hospital for treatment in time, because black tumors are very dangerous and may be life-threatening.