In most cases, parents can trust their own judgment of whether their child is sick, because you know best the child’s usual habits, temperament, health status a few months after birth, infants are not necessarily feverish or have special symptoms and change quickly, parents may not be able to grasp the status of illness. However, it is best to go to the doctor when the following conditions occur: 1. when you feel uneasy after observing the situation 2. when there is acute abdominal pain 3. when there is blood in the stool, urine or vomit 4. when there is redness and inflammation of the eyes 5. when there is a generalized rash 6. when there is jet vomiting 7. when there is poor breathing and the face turns white or blue 8. when there is cramping 9. when there is confusion and drowsiness 10. when there is excessive bleeding (parents must first apply direct pressure to stop the bleeding) 11. The fever is a normal response of the immune system to the disease and the height of the fever does not represent the severity of the disease, and the fever itself does not cause any permanent damage to the body.