Hi, my seven year old daughter has had a raised temperature (ranging from between 99 degrees, which I know is not technically a fever, but her behaviour changes accordingly, to 102) for part of each day for 16 days. She also has suffered headaches over the same period, which is very unlike her. They are mostly in the forehead and cause her to be extremely intolerant to noise. The doctors were dismissive for the first couple of weeks, but yesterday we took her to the hospital and had urine, blood tests and xrays (no sign of pneumonia). So far, only raised white blood cell count and one other immune system marker, but then we know she is fighting something. The emergency doctor suggested that it could be leukemia/cancer, but when I asked whether there might be less serious causes he said yes. He suggested that she may have to have a needle collect spinal fluid. Do you have any ideas for what might cause this and any other tests that might be helpful?
Your child seems to be suffering from a prolonged low grade fever and headache, which may be due to some infection or maybe a graver problem.  First. It is better to look for common and less serious causes first. Is there any vomiting or difficulty in vision? A spinal fluid study may be a good idea.