The lack of strength, urination, diarrhea may be caused by bacillary dysentery, acute gastroenteritis, electrolyte disorders and so on. 1. Bacterial dysentery: the disease is a kind of intestinal infections, usually due to dietary impurity, the patient will have abdominal pain, diarrhea, urinate more often and so on, may also appear weak and have no strength and other symptoms. 2. Acute gastroenteritis: the main symptoms of patients include abdominal pain, diarrhea, vomiting, etc. When the symptoms are severe, there will also be weakness and fever. 3. Electrolyte disorders: when the patient has diarrhea, urination symptoms are serious, the body’s electrolyte loss is too much, the body lacks potassium, sodium, the patient will also have symptoms of weakness. In addition to the above factors, we can’t rule out other causes, it is recommended to consult a doctor in time for standardized treatment, so as not to aggravate the symptoms on the body.