Urethritis causes

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Overview
Urethritis is inflammation of the urethra. The main symptom is dysuria, which is painful or difficult urination.

Causes
In the diagnostic approach to urethritis, physicians classify the disease as gonococcal urethritis or non-gonococcal urethritis (NGU), based on its causation. Non-gonococcal urethritis, sometimes called non-specific urethritis (NSU), has both infectious and non-infectious causes. In men, purulent discharge usually indicates a urethritis of gonococcal nature, while clear discharge indicates urethritis of non-gonococcal nature. Urethritis is difficult to diagnose in women because discharge may not be present, however, the symptoms of dysuria and frequency may be present.

Causes include:
 * Neisseria gonorrhoeae
 * Chlamydia trachomatis
 * Mycoplasma genitalium
 * Adenovirus
 * Herpes simplex
 * Reiter's syndrome
 * Escherichia coli