Psittacosis is a type of infection caused by the bacterium Chlamydia psittaci. This infection commonly affects birds, such as parrots, and can be transmitted to humans through inhalation of airborne particles from contaminated feces or respiratory secretions. There are several synonyms for psittacosis, including "parrot fever", "avian chlamydiosis", and "chlamydiosis". These terms are often used interchangeably to refer to the same illness. Symptoms of psittacosis may include fever, headache, muscle aches, cough, and difficulty breathing, among others. Treatment usually involves antibiotics, and patients are advised to avoid handling or having contact with infected birds to prevent the spread of the disease.