Although possible, I am not aware of a virus that can cause the symptoms in the individuals that you describe. If there is concern about infection, you can consider a
urinalysisUrinalysis for analysis of infection.
The CT scan would give pretty good imaging of the kidneys. Further imaging can include a kidney ultrasound. A stone would be unlikely if the CT scan was negative.
A muscle
strainStrains certainly can be possible. I would consider this if the other tests were non-revealing.
Another possibility would be a GI cause for the pain. Depending on where it is, possible tests can include an abdominal ultrasound as well as possible endoscopy.
These options can be considered with your personal physician.
Followup with your personal physician is
essentialEssential balance
Essential hypertension
Essential tremor.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b