foot pain and knee pain

I need your help... My daughter, 4 years old, is having fever, chest pain, knee and foot pain, cough, and colds. she's complaining also of itchy throat.  Im getting worried with her frequent complain in the foot and knee. even though she no longer has a fever, she still complains of the foot and knee pain.  but everytime she has a fever, it will always be accompanied by knee and foot pain.. can somebody tell me what illness has she been having?  

thank you.

[kvturner]

Talk to your daughter's doctor as soon as you can. There is probably something going on that needs to be taken care of now before it gets worse. I am not her doctor, and do not know the extent of her symptoms, so I can not diagnose anything. It sounds like it may be autoimmune.