Skin cancer is coming, this is a "warning" that cannot be ignored
Skin cancer is coming, this is a "warning" that cannot be ignored
Skin, known as the organ with the largest physical activity area of students, is a vital barrier for human beings to resist foreign invaders such as bacteria, and is the first and second part of people's body to present to the world economy. handheld dermatoscope Skin cancer is a kind of cancer that occurs on the skin. It has a relatively high incidence in developed countries in Europe and America. In our country, the incidence of skin cancer is relatively low.
Skin cancer is not contagious. Overexposure to harmful ultraviolet (UV) radiation from the sun is a major cause of skin cancer. Uv radiation can damage DNA and suppress the immune system, thus accelerating the growth of tumor cells. As a kind of malignant tumor, skin cancer will have special performance in the process of skin formation, so understanding some health knowledge of skin cancer is conducive to our comprehensive understanding of skin cancer.
Early skin cancer symptoms
Papular lesions and erythema are common early signs of skin cancer, often accompanied by scaly desquamation or scab. electronic dermatoscope Symptoms are similar to benign skin diseases such as psoriasis, eczema, and inflammation. As the disease progresses, some characteristic signs may appear, such as glossy, translucent papular nodules with telangiectasia, or smooth, scary-like fibrous plaques without obvious telangiectasia, ulcers, and prominences, or black fusion points within the lesion.
Causes of skin cancer
Ultraviolet exposure
Long-term exposure to the sun will double the skin's ability to accept ultraviolet rays, weakening the protective work of melanin and the autoimmune function system, which can induce skin cancer. The head, 365nm UV Lamp face, back neck, and hands are the areas that receive the most extensive and largest UV rays, and almost all squamous cell carcinomas occur in these exposed areas. Ultraviolet light will affect the structure of the genes in the cells and constantly change, destroy the normal operation and activity of lymphohistiocytes, reduce the immune response ability of the immune control system, resulting in skin cancer.
Chronic inflammation
Chronic inflammation, chronic ulcers and sinuses are high-risk sites for malignancy to develop and develop, especially for those who smoke, drink alcohol and chew betel nut, which is more likely to produce squamous cell carcinoma in the lips and mouth.
Ionizing radiation
With the development of radiation technology and equipment, people who have been engaged in radiation work for a long time do not take protective measures, which will lead to dry skin, especially medical personnel and chemical personnel should take protective measures to prevent skin cancer.
Chemical carcinogen
Prolonged exposure to some chemical substances can cause skin cancer, such as tar, arsenide and bitumen, which initially only causes some damage to the surface of the skin, but it is irreversible because of changes in cells over time or through genetics. Prolonged exposure of the skin and cultural contact with these learning chemicals may cause skin cancer.
hypoimmunity
Skin cancer occurs when the immune system and immune system are impaired, especially when people take immunosuppressants, which can directly lead to the development of skin cancer. Some viruses can also cause skin cancer, such as human papillomavirus. The public is advised to observe good personal hygiene.
Skin cancer warning
eczema
When some symptoms of eczema or ulcers suddenly appear on the skin, it may be a typical early sign of skin cancer. According to a summary of the clinical presentation, many women with skin cancer initially develop eczema-like spots around the nipple. If eczema is repeated or prolonged, it may even produce some sticky brown discharge. We must go to the hospital to screen for skin cancer at an early stage so as not to delay the best time to treat it.
The skin color gradually changes
The average person's skin will not change too much in a short time. But when a person begins to develop patches of skin that are different from the normal skin color (there are dark brown or blue), we need to draw students' attention. In order to make a more accurate judgment, you can observe a period of working time, and at the same time determine whether the abnormal skin condition is accompanied by rough and particulate matter generation symptoms by your own touch. If so, you need to go to the dermatology department of the hospital for further examination during the first part of China.
Change of nevus
Everyone will have some moles more or less, and these normal moles should be well-shaped, not cloudy, and not too large. But in the early stages of skin cancer, the body gradually develops a mole, which may be larger than a normal mole, which may turn dark brown, red or white, or it may be oddly shaped, irregular, asymmetrical, or the original mole may grow from small to large. With this kind of mole, be careful, it is best to go to the hospital to investigate.