The symptoms of many cancers are not typical and can be easily confused with other diseases and ignored. As a result, it is too late to discover …… Therefore, identifying early symptoms of cancer is crucial for early diagnosis and treatment of cancer, as well as improvement of survival. Eight manifestations 1. Sudden weight loss If you live a regular life, neither dieting nor exercising to lose weight, and your eating habits and life rhythm have not changed, but your weight suddenly drops, you should pay attention to it. According to the information of American Cancer Society, esophageal cancer, lung cancer, pancreatic cancer, stomach cancer and many other cancers may lead to sudden weight loss. 2. Heartburn and chest pain “Heartburn” is mostly caused by excessive gastric acid stimulating the gastric mucosa and esophageal mucosa, and the symptoms are pain and burning sensation behind the sternum. “Heartburn” and chest pain are typical symptoms of GERD, but they may also be signs of esophageal cancer (GERD is also a high risk factor for esophageal cancer). 3.Breast changes Flattened or sunken nipples (especially unilateral) and overflowing fluid are common symptoms of breast cancer. Redness or purple skin of the breast or with burning pain may also indicate breast cancer. Women should also be aware that sudden severe menstrual cramps, heavy “menses” or vaginal bleeding between periods may indicate endometrial cancer. 4. Difficulty in swallowing and hoarseness If you feel that food cannot go down when swallowing (stagnant feeling) or something sticks in your throat (foreign body feeling), which can be relieved or disappeared after swallowing saliva, you should be careful. Difficulty in swallowing may be related to laryngeal cancer, esophageal cancer, or may be the first symptom of lung cancer. Hoarseness and foreign body sensation in the throat may indicate thyroid cancer. 5. Pain There are various causes of pain in the body, but the pain caused by cancer is characterized by persistent pain, which cannot be relieved even by using some basic pain medications. According to the American Cancer Society, rectal cancer and ovarian cancer may cause back pain; brain cancer may manifest as long-term headache; and unexplained stomach pain points to the lesion area not only the stomach, but also other tissues or organs, such as liver cancer. Please pay more attention to body pain, even if it is not caused by cancer, it is still necessary to pay attention to it. 6. Skin changes The skin will age with age, especially the elderly should pay attention to the changes of their skin. For example, moles on the skin: benign moles are usually uniform in color and have clear edges, but if a mole suddenly becomes larger, changes color, suddenly bulges, becomes blurred at the edges, ulcerates, or is painful, you should be alert to the possibility of melanoma and seek medical attention immediately to receive further examination. 7.Continuous and repeated fever Fever is usually not caused by serious diseases, but if the fever does not go down after physical cooling or medication cooling, you should pay attention to it. Fever is a regulatory mechanism of the body. Leukemia, lymphoma and many other cancers can affect the immune system, and the body may manifest itself as persistent fever in order to combat this problem. Therefore, intermittent and sporadic fever should not be treated as a cold, but should be treated in a timely manner by seeking medical attention. 8, oral leukoplakia Oral leukoplakia, the accurate term is oral mucosal leukoplakia. If you are a long-term smoker, the sudden appearance of white spots in the mouth and on the dental bed may be an early symptom of cancer. Oral problems can be easily ignored, so if you are a long-term smoker, you should pay special attention to the changes that occur in your mouth.