A wart, also known as common wart, may be related to low immunity, or it may be caused by localized skin breakage and long-term poor living environment. 1. low body immunity: for example, long-term application of hormones, or suffering from lupus erythematosus, malignant tumors and other diseases, resulting in lowered body immunity, it may increase the risk of common warts. 2. local skin breaks: due to local skin trauma, resulting in skin breaks, breaks by the human papilloma virus infection, resulting in abnormal differentiation of epithelial cells, hyperplasia, causing epithelial benign proliferation, which may make the broken skin parts of the common warts. 3. Bad living environment: If you stay in the hot and humid environment for a long time, you may increase the chances of having common warts. The warts may also be caused by other reasons. If you have a lot of warts, it is recommended that you seek medical advice as soon as possible and get targeted treatment under the guidance of your doctor.