How do I tell if shoulder pain is from bursitis or tendonitis?
Shoulder pain is a frequent complaint in the United Kingdom, often arising from issues within the complex network of muscles, tendons, and cushioning sacs that support the joint. Because the rotator cuff tendons and the subacromial bursa are located so close to one another, it can be difficult for a patient to determine exactly which structure is causing the discomfort. While both conditions share many similarities, there are specific patterns of pain and physical signs that can help you distinguish between the two and choose the most effective management path.
What We’ll Discuss in This Article
- Key differences in where the pain is felt and how it behaves.
- Specific movements that trigger tendon versus bursa irritation.
- How the sensation of pain differs during the night.
- The physical signs a healthcare professional looks for during an exam.
- Why both conditions often occur at the same time in the shoulder.
- Initial steps for managing shoulder discomfort according to UK guidelines.
Comparing the location and sensation of pain
The primary way to distinguish between these two conditions is by paying close attention to the exact nature of the discomfort. Tendonitis pain usually feels very localized and sharp, often occurring specifically when you attempt to lift your arm or reach for an object. In contrast, bursitis pain tends to be a more generalized, dull ache that can feel as though it is coming from deep within the shoulder. While NHS guidance on shoulder pain notes that both can cause significant discomfort, bursitis is often associated with a feeling of fullness or pressure inside the joint that remains present even when the arm is not moving.
Identifying triggers during movement
The specific movements that cause a spike in pain can provide a clear clue about the source of the irritation. If you feel a sharp, stabbing sensation when lifting your arm out to the side between a sixty and one hundred twenty degree angle, this is a classic sign of tendonitis, often called a painful arc. If the pain is more constant and is triggered by any movement of the joint, or if it hurts significantly when you press on the tip of your shoulder bone, bursitis is more likely. Because tendons are involved in active movement, tendonitis pain is often most acute when the muscle is working hard to lift or pull a weight.
Differences in nocturnal symptoms
The way the shoulder behaves at night is one of the most reliable ways to identify bursitis. People with shoulder bursitis often find it almost impossible to sleep on the affected side because the direct pressure on the inflamed bursa causes an intense, throbbing ache. While tendonitis can also be uncomfortable at night, the pain is usually less sensitive to the specific position of the body and more related to how much you used the arm during the day. If you find yourself consistently waking up due to a deep ache that only settles when you change positions, the bursa is likely the primary source of the problem.
Clinical tests and physical signs
A healthcare professional in the UK will use specific physical tests to help differentiate between these two soft tissue issues. One common method involves checking for tenderness directly over the bony landmarks of the shoulder; tenderness in the gap just below the outer edge of the shoulder bone often points toward bursitis. NICE standards for subacromial shoulder pain suggest that if the pain is relieved significantly by resting the arm but returns immediately with resisted movement, the issue is more likely to be the tendon. In many clinical settings, an ultrasound scan is used to provide a definitive answer, as it can visualize fluid in the bursa and any changes in the tendon structure.
Why the conditions often overlap
In many cases, it is not a matter of having one or the other, as both conditions frequently coexist in what is known as shoulder impingement syndrome. This happens because the space inside the shoulder joint is very narrow. If a tendon becomes slightly thickened due to tendonitis, it leaves less room for the bursa, which then becomes pinched and inflamed. This creates a cycle where both structures are irritated simultaneously. When this occurs, the symptoms of both conditions will be present, requiring a management plan that addresses both the inflammation of the bursa and the strength and health of the rotator cuff tendons.
Managing the symptoms effectively
Regardless of whether the pain is from bursitis or tendonitis, the initial recovery steps focus on settling the inflammation. This involves following the PRICE method and avoiding activities that involve reaching overhead or lifting heavy objects. Once the acute pain has subsided, the focus should shift to gentle strengthening and mobility exercises. Physiotherapy is highly effective for both conditions in the UK, as it helps to improve the posture of the shoulder and create more space within the joint, reducing the pressure on both the tendons and the bursa and preventing the symptoms from returning in the future.
Conclusion
Telling the difference between shoulder bursitis and tendonitis involves looking at whether the pain is a sharp, movement-related jolt or a constant, deep ache that is sensitive to pressure. While they often occur together, understanding the primary source of your pain can help you tailor your recovery, whether that involves focused tendon strengthening or more significant rest for an inflamed bursa. Most shoulder issues resolve within a few weeks of consistent care and activity modification. If you experience severe, sudden, or worsening symptoms, call 999 immediately.
Can I have both conditions at the same time?
Yes, it is very common for both the bursa and the tendons in the shoulder to be inflamed simultaneously due to the limited space in the joint.
Will an X-ray show the difference?
An X-ray only shows bones and will not show inflammation in the tendons or bursae, though it can rule out other issues like arthritis or a fracture.
Is it safe to use a sling for shoulder pain?
Slings are generally not recommended for long periods as they can lead to a frozen shoulder; it is better to maintain gentle movement within a pain-free range.
Does heat or ice work better for the shoulder?
Ice is usually better for the first few days to reduce swelling, while heat can be used later to relax tight muscles around the joint.
Can poor posture cause these shoulder issues?
Yes, rounded shoulders or a slumped posture can narrow the space in the joint, leading to repetitive pinching of the tendons and bursae.
How long does shoulder recovery usually take?
Most people see a significant improvement within four to six weeks, though chronic cases may require several months of physiotherapy.
Should I stop all overhead reaching?
In the short term, avoiding overhead activities gives the tissues time to heal and reduces the mechanical irritation of the inflamed area.
Authority Snapshot
This article provides a clinical guide to distinguishing between common causes of shoulder pain to assist patients in their recovery. It has been written by the MyPatientAdvice Medical Writing/Research Team and reviewed by Dr. Rebecca Fernandez to ensure medical accuracy. The information is strictly aligned with the latest NHS and NICE clinical guidance for the management of subacromial shoulder conditions in the UK.
