1. Diarrhea is defined as more frequent bowel movements with soft and liquid stools. It is usually caused by viruses, bacteria, parasites, certain foods, medications, and other digestive disorders.
2. Symptoms of diarrhea include soft, watery stools, abdominal cramps, pain, fever, blood in stool, swelling, and urgency. It can cause dehydration, especially in children.
3. Doctors may perform blood tests, stool analysis, and imaging tests to diagnose the cause. Treatment depends on the cause but often involves replacing fluids and electrolytes, antibiotics if bacteria is involved, and managing any underlying conditions.