You should seek medical help for diarrhea if it is severe, persistent, or accompanied by concerning symptoms. If diarrhea lasts more than a few days, leads to dehydration, or is associated with high fever, blood in the stool, or severe abdominal pain, it’s important to consult a doctor. People taking antibiotics, such as cephalexin capsules distributors, should be especially cautious, as diarrhea can sometimes indicate an infection like Clostridium difficile. Children, older adults, and those with weakened immune systems are at higher risk for complications. Prompt medical attention ensures proper diagnosis, treatment, and prevention of serious health issues.