Gonnococcal infection, also known as gonorrhea, gonorrhoea and the clap) is a common sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae. The usual symptoms in men are a burning sensation with urination and penile discharge. Women, on the other hand, are asymptomatic half the time or have vaginal discharge and pelvic pain. In both men and women, if gonorrhea is left untreated, it may spread locally, causing inflammation of the epididymis or pelvic inflammatory disease or throughout the body, affecting joints and heart valves. The common treatment is with ceftriaxone (Rocephin), as resistance has developed to many previously used antibiotics. Ceftriaxone is typically given in combination with either azithromycin or doxycycline, as gonorrhea infections may occur along with chlamydia, an infection that ceftriaxone does not treat. Some strains of gonorrhea have begun showing resistance to this treatment, which will make infection more difficult to treat.