Cortisone steroids work by decreasing inflammation caused by a variety of common orthopedic conditions including tendonitis, bursitis, and arthritis. Once the inflammation subsides, pain relief follows.
Cortisone starts to work immediately following the injection, and inflammation usually begins to subside within a few days. Depending on how quickly the inflammation subsides, the timing of pain relief can vary from a few days to a few weeks.
Most people who have a cortisone injection, and find relief from the injection, will describe the gradual reduction in symptoms over days to weeks. However, the amount of inflammation, the type of injection administered, and other factors can all affect the length of time it will take before you experience relief.
If the inflammation is severe, or if the inflammation has been around a long time (chronic), the cortisone injection may take longer to take effect and may require more than one injection.
Not everyone will respond to a cortisone injection, but most people find this to be an excellent treatment for many common inflammatory conditions.
If your cortisone shot hasn’t worked after a few weeks, let your doctor know so that you can discuss the next steps in treatment. https://www.nhs.uk/conditions/steroid-injections/