Shoulder pain is common and can happen after an injury, overuse, poor posture, or even something as simple as sleeping in an awkward position. In many cases, mild shoulder pain improves with rest and time. But what happens when your shoulder keeps hurting for days or weeks?
Persistent shoulder pain shouldn’t be ignored. Ongoing pain may be a sign of an underlying condition that needs proper evaluation and treatment.
Why Does Shoulder Pain Keep Coming Back?
The shoulder is one of the most mobile joints in the body. It relies on muscles, tendons, ligaments, and bones working together to provide stability and movement. Because of this complexity, there are many possible causes of persistent shoulder pain.
Common causes include:
- Rotator cuff injuries: The rotator cuff is a group of muscles and tendons that helps stabilize the shoulder. Tendinitis, inflammation, or a tear can cause ongoing pain, especially when lifting the arm.
- Shoulder impingement: This occurs when tissues in the shoulder become compressed during movement, often causing pain when reaching overhead.
- Bursitis: Inflammation of a fluid-filled sac called a bursa can cause pain, swelling, and tenderness.
- Arthritis: Wear and tear in the shoulder joint can lead to stiffness, aching, and reduced range of motion.
- Frozen shoulder: Also called adhesive capsulitis, this condition can cause significant stiffness and make everyday movements difficult.
- Muscle strains: Repetitive activity, exercise, or sudden movements can strain the muscles around the shoulder.
- Previous injuries: A shoulder that has been injured in the past may remain vulnerable to recurring pain or stiffness.
Sometimes, shoulder pain can also originate from another part of the body, such as the neck.
When Should You See a Doctor for Shoulder Pain?
If shoulder pain is mild and improving, you may be able to manage it initially with rest and activity modification. However, persistent or worsening pain deserves medical attention.
Consider getting evaluated if:
- Your shoulder pain lasts more than a few days and isn’t improving.
- Pain continues for several weeks.
- You have difficulty lifting or moving your arm.
- Your shoulder feels weak.
- You have persistent swelling or tenderness.
- Pain regularly wakes you up at night.
- You experienced a fall, collision, or other injury.
- You have numbness or tingling in your arm or hand.
- You notice a significant loss of range of motion.
Early evaluation can help identify the cause of the pain and determine whether you need medication, physical therapy, imaging, or another type of treatment.
What Can You Do at Home?
For minor shoulder pain, several simple measures may help reduce discomfort while you determine whether the problem is improving.
Rest From Activities That Make the Pain Worse
You don’t necessarily need to keep your shoulder completely still. Instead, temporarily reduce activities that aggravate the pain, such as repetitive overhead movements, heavy lifting, or certain exercises.
Use Ice or Heat
Ice may help reduce pain and inflammation after an injury or strenuous activity. Heat may be helpful for muscle tightness and stiffness. Use whichever provides relief, while protecting your skin from extreme temperatures.
Maintain Gentle Movement
Avoiding all movement for an extended period can sometimes contribute to stiffness. Gentle, pain-free range-of-motion exercises may help maintain mobility.
However, avoid forcing a painful movement or starting aggressive exercises before you know what’s causing the pain.
Pay Attention to Your Sleeping Position
Shoulder pain can become worse at night, particularly if you sleep directly on the painful shoulder. Try sleeping on your back or on the opposite side and supporting the affected arm with a pillow.
Why Physical Therapy May Help
If shoulder pain doesn’t resolve on its own, physical therapy may be an important part of recovery.
A physical therapist can evaluate your strength, flexibility, posture, and range of motion and develop an individualized treatment program. Depending on the cause of your pain, treatment may include:
- Stretching and range-of-motion exercises
- Strengthening the rotator cuff and surrounding muscles
- Posture and body-mechanics training
- Manual therapy
- Gradual return to normal activities
- Exercises designed to improve shoulder stability
The goal isn’t simply to make the shoulder feel better temporarily. A properly designed rehabilitation program can help address contributing factors and restore function.
When Is Imaging Necessary?
Not every case of shoulder pain requires an X-ray or MRI. A healthcare professional can determine whether imaging is appropriate based on your symptoms, medical history, physical examination, and how long you’ve been experiencing pain.
An X-ray may be useful for evaluating bones and arthritis, while an MRI can provide more detailed information about soft tissues such as tendons and muscles.
Don’t Ignore Severe or Sudden Shoulder Pain
Some shoulder pain requires urgent medical evaluation.
Seek immediate medical attention if shoulder pain occurs with chest pain, pressure, shortness of breath, sweating, nausea, dizziness, or pain spreading to the jaw or arm, because these symptoms can sometimes indicate a heart-related emergency.
You should also seek prompt medical care after a significant injury, especially if the shoulder appears deformed, you cannot move your arm, or you have significant weakness or numbness.
The Bottom Line
Shoulder pain that won’t go away is worth paying attention to. While minor strains may improve with rest and appropriate activity modification, persistent pain can sometimes indicate a rotator cuff problem, arthritis, bursitis, frozen shoulder, or another condition requiring treatment.
If your shoulder pain is interfering with sleep, work, exercise, or everyday activities—or simply isn’t getting better—consider having it evaluated by a healthcare professional.
The sooner the underlying cause is identified, the sooner you can develop an appropriate plan to reduce pain, restore movement, and get back to your normal activities.