Of course, for severe inflammations (with inflammations, there are no infection) steroid anti inflammation drugs can be used, such as cortisone.
I would follow the advice you get
from your doctor, but be sure to report side effects, if you
get burning chest/stomach pain, tell him at once, because NSAIDs in high doses may cause ulcers. The dose required for an anti-inflammatory effect is much higher than just to relieve pain.
I think you need some treatment in addition to NSAIDs.