Abstract
Although Pseudomonas aeruginosa (PA) hasn't been considered as a recognized agent of diarrhea, this organism is able to cause community-acquired diarrhea accompanied by fever and sepsis, as well as antibiotic-associated diarrhea (AAD). Antibiotic resistance rates in stool isolates of PA are generally lower compared to other infection sites, but in patients with AAD, there are reports of resistance to most of the antibiotic classes in these isolates. PA, along with other opportunistic pathogens like Clostridioides difficile, can cause AAD. Therefore, it is suggested to examine stool samples of patients with predisposing factors such as intensive care unit (ICU) admission and long-time antibiotic treatment, especially with cephalosporins, for both C. difficile and PA.