Why does diarrhea occur in typhoid fever?

Diarrhea in typhoid fever occurs primarily due to the infection and inflammation of the intestines caused by the Salmonella Typhi bacteria. The bacteria disrupt the normal absorption processes and damage the intestinal lining, leading to increased secretion of fluids and electrolytes into the gastrointestinal tract. This results in watery stools and can contribute to dehydration if not managed properly. Additionally, the systemic infection can also affect gut motility, further exacerbating diarrhea.