Cortisone injection - how long before they work?

[Sundaypolodog]

Hi How long does it take for a cortisone injection to start working? I had one last Tuesday for shoulder pain - Tendonitis or impingement. It's still not making any impact on the pain or difficulty moving it. How long does it take to start working.

I've had the shoulder pain almost as long as lockdown and have been having physio and exercises for about 3 months. it's really wearing me down as I can't do much, and the pain wakes me up so I'm not sleeping well.

Anyone??

I think it can take a couple of weeks based on what DM was told. She has a shoulder injury and this is the first go at the injection. Hopefully it will bring you some relief soon!

I had bilateral impingement and the steroid injections did nothing for that at all in my case . I have had them for other things though and they’ve helped within a few days .

Thank you @spottygymbag @Floralnomad
So it may work, given time, or it may not - it's a case of wait and see

I had one in February but it did nothing. My GP said that accuracy is very important but that even then they don't always work.