Why Does My Shoulder Hurt, and Could It Be Serious?
Possible reasons why your shoulder hurts vary, but where you feel pain can help narrow down the cause. Common causes include poor posture, bursitis, arthritis, muscle strain, or a pinched nerve.
The Most Common Causes of Shoulder Pain
The location of your shoulder pain can help determine which part of the shoulder is affected, and also whether your pain may be due to a specific activity or event (like swimmer's shoulder), or related to a more serious condition (like breast cancer treatment).1
