The main manifestation of UTI is painful urination and urethral overflow about 1 week after impure intercourse. In urethritis caused by gonococci (gonorrhea), the urethral overflow is yellowish-white in the early stages, while in non-gonococcal urethritis (the pathogen is often Chlamydia trachomatis), the urethral overflow is usually clear mucus. The pathogen of warts is the human papillomavirus (HPV). there are many subtypes of HPV, and different subtypes have different sites of infection and different risks to people. In addition, HPV affects men and women differently. In men, HPV infection is characterized by proliferative skin changes (burrs) in the genital area (head of the penis, coronal sulcus and urethra), resembling a “coronary”. HPV infection in women can lead to cervical cancer. Unlike UTIs, many patients with condyloma acuminata do not have a clear history of unclean sexual intercourse. Genital herpes is a viral infection caused by the herpes simplex virus type II. The virus invades the body through broken skin and lurks in the nerve roots of the spinal cord, where it can “make waves” when the body’s resistance is reduced (fatigue, cold, etc.). The main manifestation of genital herpes is the appearance of small, painful, flaky blisters on the genital area. When the blisters break, they form small red vesicles. This virus is not easily and completely removed and is prone to recurrence. The causative agent of hard chancre is the syphilis spirochete, and the incubation period of the disease is about 2 weeks. The main manifestation of hard chancre is a single ulcer with a hard base in the genital area (most commonly in the coronal groove of the penis). There may also be enlarged lymph nodes in the groin (root of the thigh). Pubic lice are parasitic infections that live on the roots of the pubic hair and manifest mainly as itchy pubic hair areas, small worms on the roots of the pubic hair, and small pinpoint blood spots on the underwear. A special reminder is that if you suspect you have a problem, you should visit the urology department of a regular hospital as soon as possible to avoid delaying treatment.