Ornithosis, also known as psittacosis, is related to chlamydia and cat-scratch disease, and has symptoms including fever, headache and rash. An important gene associated with Ornithosis is PIK3C2A (Phosphatidylinositol-4-Phosphate 3-Kinase Catalytic Subunit Type 2 Alpha). The drugs Azithromycin and Doxycycline have been mentioned in the context of this disorder. Affiliated tissues include lung and heart, and related phenotype is cardiovascular system.