My daughter who is 6 y.o. has had swollen knees and pain for the last three weeks. Originally we thought the swelling was acquired when she bruised her ankles when she tried doing a cartwheel in gym and landing on the both ankles. The bruising is long gone and since then she has a cold and fevers on and off. She has also had a rash on her lower legs. She refuses to play outside at school because of the knee pain, which isn t like her.LShe comes home from school with swollen knees that look like there may be fluid in the joint. Her only other significant health history includes strabismus which she has wears corrective lenses. She has no allergies.