Insta keto In these cases, the appearance of fever is common and it is necessary to go to the doctor to do blood and stool tests to identify the cause of the problem, and take the appropriate medication.When should you see a doctor?It is important to be aware of the symptoms and seek medical help in case one or more of two factors arise below:If the diarrhea lasts more than a week;If the patient shows signs of dehydration such as dry mouth and skin, little urine, weakness and indisposition;Strong and persistent abdominal pain;Dark stools or stools with blood or mucus;