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Published on: 8/18/2026
Left shoulder pain is often caused by nerve compression or underlying issues in the neck and spine, such as a pinched nerve, cervical radiculopathy, or a herniated disc. In some cases, it may also signal referred pain from the heart or internal organs, making accurate identification essential.
Because left shoulder pain has many possible causes—ranging from minor muscle strain to serious medical conditions—guessing can delay proper care. A free, instant, online symptom check can help you quickly narrow down likely causes, understand urgency, and confidently decide your next steps.
Reviewed for medical accuracy: 07/14/2026
Shoulder pain can sometimes be tricky to figure out. It might be caused by problems with the nerves in the shoulder, as noted in one of the references. This means the nerves that send signals to your shoulder could be irritated or pinched, causing pain.
Another reason for shoulder pain could be related to your neck. Sometimes, issues in the neck, like a pinched nerve or other spine problems, can make your shoulder hurt too. This is because the nerves in your neck are connected to your shoulder.
Here are some possible causes of shoulder pain:
If you have shoulder pain, it might help to think about whether you also have neck pain or if moving your neck makes the shoulder hurt more. To get a better understanding of what might be causing your discomfort, try our free AI symptom checker for personalized insights. Remember, it's always a good idea to talk to a healthcare professional if you're concerned about pain.
(References)
Bateman JE. (1983). Neurologic painful conditions affecting the shoulder. Clinical orthopaedics and related research, 6825345.
Mimori K, Muneta T, Komori H, Okawa A, & Shinomiya K. (1999). Relation between the painful shoulder and the cervical .... Journal of shoulder and elbow surgery, 10472000.
Pateder DB, Berg JH, & Thal R. (2009). Neck and shoulder pain: differentiating cervical spine .... Journal of surgical orthopaedic advances, 19995495.
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