If a patient has diarrhea with leg pain and weakness, the condition is considered to be gastrointestinal cold or acute gastroenteritis, which may be caused by bacteria and viruses in addition to diarrhea and excessive loss of water and electrolytes in the body. In addition, the virus does not only involve the mucous membrane of the intestinal tract during the attack of gastrointestinal flu, but also involves the muscle tissue of the whole body, causing generalized aches and pains. After the diagnosis is confirmed, if it is a gastrointestinal cold, anti-infective treatment such as ribavirin granules or antiviral oral solution is needed; if it is acute gastroenteritis, anti-infective treatment with norfloxacin or cephalosporins is needed, and the course of treatment is usually about 3 days. When you have the above symptoms, you need to go to the hospital to draw blood to check ion biochemistry, in order to clarify whether there is potassium and sodium plasma disorder, if it exists, you need timely infusion to supplement.