Gonorrhea is a common sexually transmitted infection (STI) caused by the bacterium Neisseria gonorrhoeae. It primarily affects the genital tract, but can also infect the throat and rectum. Symptoms may include painful urination, unusual discharge, and in some cases, no symptoms at all. If left untreated, gonorrhea can lead to serious health issues, including infertility and increased risk of HIV infection. Diagnosis is typically made through urine tests or swabs, and it is usually treated with antibiotics. Regular testing and safe sex practices can help prevent the spread of this infection.