Nonspecific urethritis

Nonspecific urethritis (NGU), also known as non-gonococcal urethritis, is a more common sexually transmitted disease. It usually refers to men who have purulent or serous secretions of urethra within days or weeks after sexual intercourse. And accompanied by urinary pain; urethral secretions contain a large number of pus cells, but Gram staining microscopy or culture can not find Neisseria gonorrhoeae.