I have recently had a cortesone shot in my L4 L5 and recently been told that I have a steriod flare up. I have been experiencing strong pain where the injection was and now my pain is going through both my legs, which before the shot it was only going through one leg. How long is steriod flare up suppose to last? And what exactly is it?
On my second selective nerve root injection my nerve was touched and I can tell you I was in serious pain for about 5 -6 days. Then it finally subsided. the first and third were fine - they just wore off after a few weeks.
I was told that sometimes the needle can push on the nerve and irritate it plus all of the medicine causes more pressure. Incidentally I was ok the first day while it was numb. It got terrible once the numbing agent wore off.
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