With the sudden increase in pain over many joints in only 2 week time frame I think that you should follow up with a rheumatologist for follow up evaluation ...
Why do you take prednisone 5mg?
You may have rheumatoid arthritis or a reactive arthritis ...
INFLAMMATORY markers ( C- reactive protein and sed rate ) may help to give a picture of your state of inflammation
Autoimmune diseases may be further evaluated ...
It may be that you might benefit from a period of increased dose of prednisone ...
To see rheumatologist now ASAP is advised however
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