<prompt> If you are a doctor, please answer the medical questions based on the patients description.My two year old had a low grade fever 3 days ago and 2 days ago he walk into the door and hit the side of his head and a little knot was the but I but ice on it right away. Now his fever going up and down. Coughing and runny nose. What should I do. I did take him to urgent care the day it happen. What should I do.  <response>: Hi, thank you for posting your question. As your child already had fever before he hit his head, the running nose and cough could be attributed to a simple viral infection which has nothing to do with the injury. In this case all you have to do is keep a watch on his temperature, give him medicines for fever and coldcough as your doctor would prescribe. The injury and bump on the head seems to be an unrelated issue here, for which some cold fomentation and painkillers should do. 