After diarrhea, generalized pain and weakness may be due to dehydration, electrolyte disorders, infections, etc., and can be relieved by replenishing water and electrolytes. If the infection is caused by bacteria, you can also take norfloxacin to inhibit the growth of bacteria, for the cause of the treatment. 1. Symptomatic treatment: severe diarrhea, will lose a lot of water and electrolytes, resulting in generalized pain and weakness, you can replenish fluids, infusion of potassium chloride and other electrolyte solutions, timely correction of electrolyte disorders, relieve symptoms. 2. Treatment of the cause: If the gastroenteritis is caused by infected bacteria and other causes of diarrhea, you can take norfloxacin, levofloxacin, etc., to inhibit the growth of bacteria, alleviate the inflammatory response, and treat the cause of the disease. The appearance of the phenomenon may also be other causes, should be timely consultation, under the guidance of the doctor to identify the causes, and reasonable treatment, so as not to delay the treatment. During the period of diarrhea, avoid eating sweet potatoes, dragon fruit and other coarse fiber foods, so as not to promote gastrointestinal peristalsis and aggravate the condition. Also avoid stimulating foods such as alcohol and chili peppers to avoid aggravating diarrhea.