Diarrhea can often resolve on its own, but medical help is needed if it persists beyond a few days, is severe, or accompanied by symptoms like high fever, dehydration (dry mouth, dizziness), bloody stools, or intense abdominal pain. Seek immediate care if diarrhea occurs in infants, elderly individuals, or those with weakened immune systems. Chronic diarrhea may indicate underlying conditions like infections or inflammatory bowel disease, requiring tests or treatments like ceftriaxone injection wholesale for bacterial infections. Consult a doctor if symptoms worsen or dehydration signs appear to prevent complications and ensure proper treatment.