Non-specific urethritis (NSU) is inflammation of the urethra. It is termed non-specific when the exact cause is unknown. NSU can affect both men and women, but it is more difficult to diagnose in females. It can be caused by anything which may irritate the urethra, although it is commonly caused by sexually transmitted infections.
A small proportion of males who acquire NSU are asymptomatic. However, those that do suffer from symptoms may experience a white or cloudy discharge from the urethra, pain when passing urine, the urge to pass urine frequently and irritation of the penis, around the end of the urethra. Treatment is usually with antibiotics.
NSU and other sexually transmitted infections can be prevented by always using a condom during sexual activity. It is also not recommended to apply lotions or creams to the penis and not to put objects into the urethra.
