<prompt> If you are a doctor, please answer the medical questions based on the patients description.my daughters friend had fever with cough and cold .suddenly she developed body pains from back of neck to the tip of vertebral column,knees and joints.initially after recovering from fever she had severe breathing problem.but now s he has only s evere back and knee and joint pains.unable to sit n sleep.her esr values and HB count are normal doctors say she has post viral arthalgia and ruled out SLE .please suggest any other tests or treatment-ritu  <response>: Hi, there! Joint pain is common when virus is in the blood flow, its called viral intoxication possible to get rheumatism diseases after flubacterial tonsillitis. To figure it out You need blood tests - C-Reactive protein CRP, Rheumatoid Factor RF, Anti-cyclic citrullinated peptide antibody anti-CCP, Protein biomarker 14-3-3eta.Its possible to have co-disseases that arise or relapse dont want to frighten You, hope this helps! 