The disease is classified as either gonococcal<unk> , caused by Neisseria gonorrhoeae, or non-gonococcal<unk>  (NGU), most commonly caused by Chlamydia trachomatis, which is accounted for 20-50% of routinely tested cases. NGU, sometimes called nonspecific<unk>  (NSU), has both infectious and noninfectious causes. Other causes include: * Mycoplasma genitalium: second most common cause accounting for 15-20% of non-gonococcal<unk>  * Trichomonas vaginalis: accounts for 2-13% of cases in the US; infection is mainly asymptomatic in most cases * Adenoviridae * Uropathogenic Escherichia coli (UPEC) * Herpes simplex virus * Cytomegalovirus * Reactive arthritis:<unk>  is part of the triad of reactive arthritis, which includes arthritis,<unk> , and conjunctivitis. * Ureaplasma urealyticum * Methicillin-resistant Staphylococcus aureus * Group B streptococcus * Irritation of the genital area: for example catheter-induced, physical activity, tight clothing or soaps * Fungal<unk>  in immunosuppressed individual * Menopause
Urethritis
Urinary tract infection
Vaginitis
Oophoritis
Chondritis
Orchitis
Prostatitis
Salpingitis