Chlamydia trachomatis infections are often asymptomatic, making them difficult to detect. However, when signs and symptoms do occur, they are usually mild. These include painful urination, vaginal discharge or discharge from the penis in men, painful sexual intercourse in women, bleeding between periods and after sex in women, and testicular pain in men. Additionally, chlamydial eye infections (conjunctivitis) and rectal infections with symptoms of rectal pain, discharge, or bleeding can occur. Therefore, it is important to be aware of potential signs and symptoms, even if they may be mild, in order to effectively diagnose and treat infections.