With you having your prednisone dropped and new symptoms of dizziness plus some pain > I would advise that you follow up with your doctor and have the inflammatory markers rechecked.
Things can change within a month
This would be especially true with a changing dose of the prednisone.
They can check a combination of the sed rate and C-reactive protein and this would help to differentiate to see if it related the vasculitis.
I hope this information helps! Let me know if you have further questions!
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Anthony Bray MD