Early symptoms of skin cancer

What are the early symptoms of skin cancer? Experts say that skin cancer is one of the most common malignant tumors in my country. Most of them grow in exposed areas. Since there are no obvious symptoms in the early stage, if it is not treated early, it will cause local tissue erosion. The typical symptoms of early skin cancer are mainly the following three:

1. Squamous cell carcinoma is often transformed from keratosis, leukoplakia and other precancerous diseases. It grows quickly and forms ulcers in the early stage. Some are nodular or cauliflower-shaped, with less invasion into the deep part and a movable base; some are butterfly-shaped, with more obvious infiltration into the deep part, great destructiveness, and often involving bones. Squamous cell carcinoma is often accompanied by purulent infection, accompanied by foul odor and pain.

2. Basal cell carcinoma is often asymptomatic at the onset. In the early stage, it is mostly plaque-like papules with hard bases, and some are wart-like protrusions, which then break down into ulcers. They are irregular, with raised edges, like craters, and uneven bottoms, and grow slowly. Metastasis is rare, and the ulcers are shallowly ulcerated with translucent nodules on the edges, which then gradually expand and can erode surrounding tissues and organs, becoming erosive ulcers.

3. Malignant melanoma: This is a highly malignant skin cancer that metastasizes quickly. The prevalence rate in Western countries is very high, and the mortality rate is also very high. Chinese people have more pigments in their skin, which provides better protection against ultraviolet rays. At the same time, they also pay more attention to sun protection in their daily lives, so malignant melanoma is relatively rare in China. Since melanoma is black in color, it is easier to find. Therefore, if black spots are found on the nails, nail beds, soles of feet, palms or other parts of the body, and they have expanded significantly in the near future and are prone to ulceration, or half of the nail has turned black, you should be alert and go to the hospital for examination in time.