If you regularly wake up with shoulder pain, you're probably familiar with the frustration of trying to find a comfortable sleeping position. You may feel fine during the day, but as soon as you lie down, the ache starts, or you wake up in the middle of the night with a sore shoulder.
Shoulder pain when sleeping is common, but it can happen for a number of different reasons. Your sleeping position, activity levels, shoulder mobility, and the health of the muscles and tendons around the joint can all play a role.
The good news is that shoulder pain doesn't have to keep you awake night after night. Understanding what's contributing to your symptoms can help you find the right approach.
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One of the most common reasons for shoulder pain when sleeping is simply the position you sleep in.
If you're a side sleeper and lie directly on the painful shoulder, several hours of pressure can irritate an already sensitive area. Even if the shoulder isn't injured, staying in one position for a long time can sometimes lead to stiffness and discomfort.
Other common causes include:
Rotator Cuff Irritation
The rotator cuff is made up of several muscles and tendons that help control and stabilize your shoulder.
When these tissues become irritated, you may notice pain when reaching overhead, lifting your arm, putting on a jacket, or lying on the affected side. For some people, pain is particularly noticeable at night.
Shoulder Stiffness
A stiff shoulder can make certain sleeping positions uncomfortable. You may also notice difficulty reaching behind your back, putting on a shirt, or reaching overhead.
Sometimes the stiffness develops gradually, while in other cases it follows an injury or a period of reduced activity.
Changes in Activity
Have you recently started going to the gym more often, increased your swimming, picked up a new sport, or spent more time doing repetitive work?
A sudden increase in activity can put more stress on the shoulder than it's used to handling. The resulting irritation may not become noticeable until later in the day or at night.
Previous Shoulder Injuries
Past shoulder injuries can sometimes continue to affect how the joint moves and how the surrounding muscles work.
If you've previously injured your shoulder and are now experiencing pain at night, a physiotherapy assessment can help determine whether changes in strength or mobility may be contributing to your symptoms.
There isn't one sleeping position that works for everyone, but a few simple changes may make your shoulder more comfortable.
If You Sleep on Your Side
Try sleeping on the side opposite to your painful shoulder.
You can also place a pillow in front of you and rest your affected arm on it. This gives your shoulder some support instead of allowing the arm to pull forward or hang unsupported.
If You Sleep on Your Back
Sleeping on your back can take pressure off the shoulder, particularly if you're used to sleeping directly on the painful side.
If your shoulder still feels uncomfortable, try placing a pillow underneath your arm for additional support.
The goal isn't to force yourself into a completely different sleeping position overnight. Small adjustments can make a difference.
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Gentle movement can sometimes help with shoulder stiffness, but stretching isn't always the answer.
If your shoulder is irritated, aggressive stretching may make things worse. The right exercises depend on what's actually causing your pain.
A physiotherapist can assess your shoulder and determine whether mobility work, strengthening, or another form of treatment is appropriate.
If your shoulder pain is consistently affecting your sleep, it's worth having it assessed.
Consider seeing a physiotherapist if:
You don't necessarily need to wait until the pain becomes severe before getting help.
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At VanCity Physio, we start by looking at the bigger picture.
Your physiotherapist will assess your shoulder movement, strength, mobility, and how you're using your shoulder during everyday activities. This helps identify what may be contributing to your symptoms and guides your treatment plan.
Depending on your assessment, treatment may include hands on therapy, mobility exercises, strengthening, education, and changes to how you approach certain activities.
Your exercises will also be tailored to your goals. Whether you want to sleep comfortably, get back to the gym, return to your sport, or simply use your arm without pain, your treatment should reflect what matters to you.
Occasional shoulder soreness after a busy day isn't necessarily something to worry about. But if you're regularly dealing with shoulder pain when sleeping or constantly adjusting your position to get comfortable, it's worth finding out what's going on.
The right treatment can help reduce pain, improve shoulder movement and strength, and get you back to sleeping and moving comfortably.
If you're dealing with persistent shoulder pain, VanCity Physio can help. Book an appointment at our Downtown clinic or Fairview clinic to get your shoulder assessed.
Why do I get shoulder pain when sleeping but not during the day?
Lying down changes the load on your shoulder. Resting directly on it puts hours of pressure on sensitive tissues, and without daytime movement to keep the joint loose, an irritated rotator cuff or stiff shoulder often feels worse at night. A physiotherapist can assess what's driving the nighttime pattern.
Which side should I sleep on with shoulder pain?
Try sleeping on the side opposite your painful shoulder, or on your back. Placing a pillow under or in front of the affected arm gives it support and stops it pulling forward or hanging unsupported.
Should I stretch my shoulder before bed?
Not always. Gentle movement can ease stiffness, but aggressive stretching on an irritated shoulder can make things worse. The right exercises depend on what's actually causing your pain, which is why an assessment helps.
How long should shoulder pain last before I see a physiotherapist?
If the pain regularly wakes you, has lasted several weeks, is getting worse, or is affecting work and daily activities, it's worth getting assessed. You don't need to wait until it becomes severe.
Can physiotherapy actually fix shoulder pain at night?
In many cases, yes. Treatment that improves shoulder strength, mobility, and movement habits often reduces nighttime pain and helps you sleep and move more comfortably. Your plan is built around your specific symptoms and goals.
Do I need a referral to see a physiotherapist in BC?
No referral is required in British Columbia. VanCity Physio also offers direct billing to most extended health plans, including ICBC and WorkSafeBC.
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