Clostridioides difficile infection, or CDI, is a serious cause of diarrhoea. It mainly affects people whose gut bacteria have been disturbed.
Antibiotics form the strongest risk factor. These drugs kill many helpful bacteria in the intestine. As a result, C. difficile can grow and produce toxins. Broad-spectrum antibiotics such as clindamycin, fluoroquinolones, and cephalosporins carry the highest risk.
Other risk factors also play a role. Older age increases susceptibility. Hospital stays and long-term care facilities raise exposure to the bacteria. Weakened immunity and underlying illness further add to the danger.
The infection often returns after treatment. Recurrence happens in a significant number of patients. Remaining spores can survive in the gut. When the normal bacteria have not fully recovered, the pathogen grows again.
Repeated antibiotic use after the first episode raises the chance of another infection. Disruption of the gut microbiota therefore remains central to both the first attack and later recurrences.
Doctors try to limit unnecessary antibiotics. They also restore gut flora when possible. These steps help reduce both new cases and repeated infections. Early recognition and careful management remain essential.