Circumcision is one of the most prevalent diseases of the glans and foreskin. Patients are almost always circumcised or overcircumcised. Between the glans and the overgrown foreskin, a warm, moist bacterial culture medium is formed due to shed epithelial cells, glandular secretion and foreskin bacilli, which can cause inflammation once bacteria enter. There are 5 main causes 1, do not pay attention to external genital hygiene. The young male circumcision sebaceous gland secretion is often more vigorous, if not pay attention to frequent cleaning, the circumcision sebaceous gland secretion liquid will accumulate under the foreskin, the formation of tofu slag-like foreskin scale. The foreskin scale is a good culture base for bacteria, not timely removal will cause bacterial infection. 2, suffering from long foreskin or prepuce. In this case, the foreskin scale is difficult to remove, if you want to cure the circumcision, you should do circumcision. 3, injured by masturbation. As a result of high excitement when masturbating, the injury is relatively small and may not be easily noticed. However, the damage on the foreskin is susceptible to bacterial contamination, which can induce foreskin inflammation. Frequent inflammation of the foreskin can lead to foreskin adhesions, urethritis, urethral stenosis, and also urinary tract infections. Therefore, usually should pay attention to genital hygiene. 4, the other is that some glans penis disease, some patients buy their own drugs, simply apply. Or external washing, there are commonly too high concentration of potassium permanganate solution leading to dermatitis, and acne patients some folk native ways on toothpaste, alcohol, as well as some named health care products and pharmacies to buy the drug. The majority of these drugs are very corrosive, leading to drug dermatitis. The consequences are terrible. Often very difficult to deal with. I once saw a patient’s penis swollen to have a child’s arm, I really do not know how to endure the pain. 5, unclean sexual intercourse, or oral food drug allergies. The change of sexual partners, or sexual life is not hygienic are the main cause of the disease. For example, the male Candida glans is related to sexual contact, who has sexual intercourse with women suffering from Candida vaginitis, easily infected; secondly, contact with indirect objects, such as other people’s underwear, bath towels, baths, etc., plus if the foreskin is too long, Candida multiplies and proliferates in the inner plate of the foreskin, the coronal groove and the glans. It has been found that men who have sexual contact with patients suffering from Candida vaginitis have 69.4% of their genitalia infected, while women with Candida vaginitis have four times the detection rate of Candida on the penis of their husbands than their husbands without vaginitis.