Some patients with gonorrhea still have symptoms of urethritis after regular treatment, and although there is no more pus in the urethra, there is still a thin discharge. The most common reason for this phenomenon is that the patient has contracted gonococcus along with other bacterial infections, resulting in non-gonococcal urethritis. The most common pathogen causing non-gonococcal urethritis is Chlamydia. Currently, non-gonococcal UTIs caused by Chlamydia are referred to as chlamydial UTIs. In addition, urethritis caused by Candida and Trichomonas vaginalis are also common. In our country, the number of non-gonococcal urethritis has increased significantly in recent years, which should attract our high attention. Compared with gonococcal urethritis, non-gonococcal urethritis has two characteristics: 1. Slow onset and mild symptoms. The symptoms of non-gonococcal urethritis appear only after an incubation period of 1 to 3 weeks after impure intercourse, unlike gonorrhea, where symptoms appear after only 3 to 5 days. The symptoms of non-gonococcal urethritis are lighter than those of gonorrhea. The first time you urinate in the morning, the urethral orifice can be sealed with a paste-like discharge, and you can often see the discharge escaping from the urethral orifice on your underwear. During the examination, squeeze the penis in the direction of the urethra and a little mucus discharge can be squeezed out. It is important to note that about 1/3 of male patients are asymptomatic or even asymptomatic. The main comorbidity in men is epididymitis, in which the epididymis is enlarged and painful to touch. Epididymitis is often unilateral, and sometimes the testicles on the same side are inflamed and the scrotum is swollen and painful. Inflammation thickens the vas deferens, and if left untreated, repeated attacks may lead to fibrosis due to inflammation and blockage of the vas deferens. If the blockage is bilateral it can cause male infertility. Prostatitis is another common comorbidity. In the acute phase, the prostate is red and congested. The enlarged prostate presses against the urethra making it difficult for the patient to urinate, with discomfort such as thinning and interruption of the urine stream and pain when urinating. There is significant pressure on the prostate on examination and most white blood cells are seen when prostate fluid is taken for examination. More clinically common is chronic prostatitis, where the patient often feels discomfort in the lower abdomen and perineum, with a feeling of heaviness, and sometimes a little discharge from the urethra. With non-gonococcal urethritis, the symptoms are far more pronounced in male patients than in female patients, so the vast majority of non-gonococcal urethritis seen in hospitals are in men. The patient’s lover or sexual partner may suffer from non-gonococcal cervicitis and not come to treatment because the symptoms are not prominent, with the result that the male partner relapses soon after treatment, and some are repeatedly treated and committed. So when one spouse has non-gonococcal urethritis, the other spouse should go to the hospital for a checkup and, if necessary, receive treatment at the same time.