Chlamydiae is a group of bacteria that can cause sexually transmitted infections, pneumonia, and eye infections. Some synonyms for chlamydiae include Chlamydia trachomatis, Chlamydophila pneumoniae, and Chlamydophila psittaci. Chlamydia trachomatis is the most common cause of chlamydia infections, while Chlamydophila pneumoniae is responsible for respiratory infections. Chlamydophila psittaci is associated with psittacosis, a rare infection caused by exposure to infected birds. Other potential synonyms for chlamydiae may include chlamydial bacteria or simply chlamydia, although these terms may not be as specific or accurate as the technical scientific names. It is important to seek medical treatment if you suspect you may have a chlamydia infection or any other sexually transmitted disease.