Editing Non-gonococcal urethritis (section)

==Causes==
There are many causes of NGU. This is in part due to the large variety of organisms living in the urinary tract. ''[[Ureaplasma urealyticum]]'' and ''[[Mycoplasma genitalium]]'' are some of the culprits.{{Clarify|date=July 2015}} NGU is also associated with [[reactive arthritis]], in which the triad of [[arthritis]], [[conjunctivitis]], and [[urethritis]] is seen.

===Bacterial===
The most common bacterial cause of NGU is ''[[Chlamydia trachomatis]],''{{Citation needed|date=July 2015}} but it can also be caused by ''[[Ureaplasma urealyticum]]'', ''[[Haemophilus vaginalis]]'', ''[[Mycoplasma genitalium]]'', ''[[Mycoplasma hominis]]'', ''[[Neisseria meningitidis]]'', ''[[Gardnerella vaginalis]]'', ''[[Acinetobacter lwoffii]]'', ''[[Acinetobacter calcoaceticus]]'',  and ''[[E.coli]]''.

===Viral===
[[Herpes simplex virus]], [[Adenovirus]],
[[Cytomegalovirus]]
{{citation needed|date=August 2013}}

===Fungi===
[[Candida Albicans]]

===Parasitic===
Parasitic causes include ''[[Trichomonas vaginalis]]'' (rare).{{citation needed|date=August 2013}}

===Noninfectious===
Urethritis can be caused by mechanical injury (from a urinary catheter or a [[cystoscope]]), or by an irritating chemical ([[antiseptic]]s or some [[spermicide]]s).