Shoulder pain is a common nuisance that you may not even think about until you reach overhead for your favorite coffee mug and, ouch, there it is! Pain that suddenly starts to interfere with routine habits like brushing your teeth, drying your hair, or reaching overhead. If this sounds familiar, it’s time to speak with your doctor.
While there are a number of potential causes for shoulder pain, two of the most common sources are attributed to either a tear to the rotator cuff or tendonitis.
Your rotator cuff consists of muscles and tendons that hold your shoulder in place. It provides the range of motion you need to lift your arm and reach upward. It is one of the most important parts of your body and gets a lot of use, which is why millions of people suffer from problems related to it.
Rotator cuff tendonitis – the inflammation of key tendons in the shoulder – is the most common cause of shoulder pain. It’s usually a gradual progression of an irritation to the area. This condition can occur when you have loose joints, abnormal bony anatomy, perform heavy, repetitive lifting above the shoulder, or are an athlete who performs sports that require frequent overhead reaching. It can also be associated with a sudden injury to the area or calcium build up in the rotator cuff tendons.
Symptoms of rotator cuff tendonitis are usually mild to begin with and can include:
A rotator cuff tear occurs when one or more of the tendon’s attachments to the arm’s humerus bone rips, or is completely severed. It can be the result of a single incident where you experience an impact to the shoulder while outstretched, or it can be the result of a degenerative tear. A degenerative tear occurs when the tendons in the rotator cuff deteriorate over time. This type of tear usually develops due to factors like repetitive shoulder movements, aging, inadequate blood supply, and bone spurs.
In either of these cases, there are two types of tears – a partial tear or a full thickness tear. A partial tear causes damage to the tendon, but does not create complete severance. A full thickness tear completely separates the tendon from the bone and is more likely to require surgery.
Symptoms of a rotator cuff tear may include:
Although a tear to the rotator cuff and tendonitis have similarities, identifying the source of your symptoms is the first step towards treatment. To properly diagnose your condition, your health care practitioner will likely discuss your medical history and perform a physical examination of your shoulder. Often, your doctor will request medical imaging to help get a better look at the area of concern. These exams could include an X-ray, ultrasound, or magnetic resonance imaging (MRI).
If you experience lingering pain in your shoulder that interferes with your day-to-day activities, it’s important to speak with your doctor about it. Whether it’s tendonitis, a rotator cuff tear, or something else, if left untreated the issue can worsen. For example, tears can get larger and more difficult to treat overtime. Discussing your symptoms with your doctor will help identify their cause and determine the best treatment plan for your needs.
REFERENCES
Harvard Health Publishing (2023) “Rotator Cuff Injury.” www.health.harvard.edu. Accessed August 15, 2025.
Johns Hopkins Medicine (2025) “Rotator Cuff Injury.” www.hopkinsmedicine.org. Accessed August 15, 2025.
OrthoBethesda (2025) “The Difference Between Rotator Cuff Tears and Shoulder Tendonitis.” www.orthobethesda.com. Accessed August 15, 2025.
Radiologists are specialized physicians who interpret diagnostic imaging to diagnose and monitor a wide range of medical conditions. At Mayfair Diagnostics, they review X-ray, ultrasound, CT, and MRI studies, among others, analyzinsg images in detail and providing comprehensive reports and clinical recommendations to referring physicians. They collaborate closely with technologists and clinic teams to guide imaging protocols, ensure quality and radiation safety standards, and may perform image-guided procedures such as biopsies or injections. Through their expertise and teamwork, radiologists play a key role in accurate diagnosis, effective treatment planning, and improved patient outcomes.
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