If shoulder pain is making it difficult to sleep, lift your arm, exercise or manage everyday activities, a steroid injection may be one treatment your clinician recommends. For many patients, however, the idea of having an injection into the shoulder naturally comes with questions.
What happens during the procedure? How quickly does it work? Can you use your shoulder afterwards? And how often can injections safely be repeated?
Here’s what to expect before, during and after a steroid injection in the shoulder, and why the treatment may be recommended.
What Is a Steroid Injection in the Shoulder?
Steroid injections, also known as corticosteroid or cortisone injections, contain anti-inflammatory medication. The medicine is injected into a specific joint or soft-tissue structure to reduce inflammation, which can help relieve pain, swelling and stiffness.
Depending on the condition being treated, a local anaesthetic may also be used. This can temporarily numb the area while the corticosteroid takes longer to begin working.
A shoulder injection isn’t suitable for every type of shoulder pain, so an accurate diagnosis should come first.
What Shoulder Conditions Can Steroid Injections Treat?
Steroid injections can be considered for inflammatory shoulder problems such as:
- Frozen shoulder
- Shoulder bursitis
- Rotator cuff-related pain
- Tendon inflammation
- Shoulder impingement-related symptoms
- Some forms of shoulder arthritis
For example, the NHS lists steroid injections as one possible treatment for frozen shoulders when pain and stiffness are significant. Steroid injections may also be used for painful tendons and bursitis.
The injection doesn’t necessarily correct the underlying structural problem. Instead, reducing inflammation and pain may make movement and rehabilitation easier.
Before Your Shoulder Injection
Before treatment, your clinician should assess your shoulder and discuss your symptoms, medical history and any medicines you’re taking.
Make sure your clinician knows if you have an infection, diabetes, take blood-thinning medication, have recently received another steroid injection, or have experienced an allergic reaction to steroids. These and other health factors may influence whether an injection is appropriate.
At Alton Pain Clinic, ultrasound can be used to assess the shoulder and guide injections. Ultrasound guidance enables the clinician to see the relevant structures and guide the needle towards the intended treatment area.
Your clinician should also explain the expected benefits, limitations and possible side effects so you can make an informed decision.
What Happens During the Injection?
The procedure itself is generally quick.
The skin is cleaned thoroughly before a fine needle is inserted into the appropriate part of the shoulder. When ultrasound guidance is used, the clinician can watch the needle’s position in real time as the medication is delivered.
You may experience some brief discomfort or pressure. If local anaesthetic is included, the shoulder may feel noticeably more comfortable shortly afterwards. That immediate improvement can wear off after several hours because the corticosteroid itself takes longer to work.
How Quickly Does a Shoulder Steroid Injection Work?
Steroid injections don’t always provide immediate relief. The corticosteroid commonly starts working within 24 to 48 hours, although it can take longer for some people.
You may also experience temporary soreness around the injection site. Occasionally, pain can briefly become worse after an injection before settling.
How long the benefits last varies considerably. Some people experience relief for several weeks or months, while others experience less benefit. Steroid injections cannot guarantee a particular duration of pain relief.
What Should You Do After a Shoulder Injection?
Your clinician will provide aftercare instructions based on the exact injection and condition treated.
Generally, it’s sensible to keep the shoulder gently moving while avoiding strenuous or repetitive activity immediately afterwards. NHS guidance varies according to the injection and condition: some services recommend resting the area for 24–48 hours, while others advise avoiding heavy lifting and repetitive use for longer.
Rather than immediately testing whether the shoulder can tolerate heavy lifting or sport, gradually return to activity according to your clinician’s advice.
If physiotherapy or shoulder exercises form part of your treatment plan, reducing pain may make it easier to progress with rehabilitation.
How Many Shoulder Steroid Injections Are Safe?
There isn’t one universal number that applies to every patient. How frequently steroid injections can be given depends on the area being treated, the corticosteroid and dose used, your health, previous response and the reason for treatment.
However, repeated injections into the same area need to be considered carefully because frequent corticosteroid exposure can potentially affect cartilage and soft tissues. Some NHS services therefore use a general limit of around three injections into the same area within 12 months, although your clinician may recommend fewer depending on your circumstances.
The aim shouldn’t be to repeat injections automatically whenever pain returns. Instead, each injection should have a clear clinical reason and ideally form part of a broader treatment strategy.
Steroid Injections as Part of Shoulder Rehabilitation
A steroid injection in the shoulder is usually best viewed as one part of treatment rather than a cure on its own.
Depending on your diagnosis, longer-term management might involve strengthening exercises, physiotherapy, modifying aggravating activities and gradually rebuilding shoulder capacity.
At Alton Pain Clinic, the process starts with assessing why your shoulder hurts before deciding whether an injection is appropriate. Where indicated, ultrasound-guided treatment can then be combined with rehabilitation advice tailored to your condition.
If persistent shoulder pain is affecting your sleep, work or daily activities, an assessment can help establish the cause and whether a steroid injection could form part of your treatment plan.
This article is intended for informational purposes only and should not replace professional medical advice. If you are experiencing persistent symptoms, please consult a qualified clinician.