Frozen shoulder: signs, stages, causes, and how physiotherapy can help
Frozen shoulder, also called adhesive capsulitis, can make everyday shoulder movements painful and limited. Reaching behind your back, lifting your arm overhead, brushing your hair, fastening clothing, or sleeping on the affected side may become difficult over time.
Frozen shoulder usually develops gradually. Many people don’t realize what they’re dealing with it until the pain and restricted movement has already settled in.
Understanding the signs, stages, and possible causes of frozen shoulder can make it easier to recognize what may be happening. It can also help you know when a physiotherapist may be able to support your recovery.
What is frozen shoulder?
Frozen shoulder occurs when the tissue surrounding the shoulder joint, called the shoulder capsule, becomes inflamed, thickened, and tight. Over time, this can limit shoulder movement in several directions, including reaching overhead, reaching behind your back, or rotating your arm outward.
Many people notice pain before the stiffness becomes obvious. It may start as a dull ache that feels worse at night, when reaching, or when lying on the affected shoulder. As the condition progresses, everyday tasks like dressing, washing your hair, or fastening a seat belt may become more difficult.
What causes frozen shoulder and who is at risk?
Adhesive capsulitis can develop after an injury, surgery, or a health event that limits how much you use your arm, such as a fracture, mastectomy, stroke, or a prolonged period of shoulder immobility. Frozen shoulder may also be more common in people with diabetes and thyroid conditions.
That said, frozen shoulder can also develop without a clear cause. It can simply begin, without an obvious trigger, and progress from there. This is called primary or idiopathic frozen shoulder.
If you have had frozen shoulder in one shoulder, you may have a higher chance of developing it in the other shoulder. Recurrence in the same shoulder is less common, but ongoing shoulder movement and strengthening may help support long-term function.
The 3 phases of frozen shoulder
Frozen shoulder is often described in three phases. Not everyone moves through these stages in a perfectly predictable way, but they can help explain how symptoms often change over time.
- Freezing phase: Pain gradually increases. Your shoulder may ache at rest or feel sharp with certain movements. Range of motion begins to decrease. This phase can last 2-9 months.
- Frozen phase: Pain may ease slightly, but stiffness reaches its peak. Daily tasks like dressing, reaching overhead, reaching behind your back, or sleeping on the affected side can feel difficult.
- Thawing phase: Movement slowly begins to return. This phase can take several months to more than a year.
The full course of frozen shoulder can last 1–3 years or more. How the symptoms develop and progress vary from person to person.
Common signs of frozen shoulder
Many people mention a combination of symptoms, including:
- Dull or aching pain in the shoulder
- Stiffness that worsens over time
- Reduced range of motion when you move your arm and when someone else moves it for you
- Difficulty with personal care tasks like dressing, hair care, or fastening clothing
- Pain feeling worse at night
- Disrupted sleep due to shoulder discomfort
- Difficulty reaching overhead or behind your back
How physiotherapy can help frozen shoulder
Physiotherapy for frozen shoulder is focused on reducing pain, improving shoulder movement, and helping you return to everyday activities more comfortably. Your treatment plan will depend on your symptoms, your stage of recovery, and how frozen shoulder is affecting your daily life.
At Lifemark, a physiotherapist may start by assessing your shoulder’s range of motion, strength, pain patterns, posture, and how your shoulder moves during daily tasks. They may also look at your neck, upper back, and surrounding muscles to understand what may be contributing to your symptoms.
A physiotherapist may use a combination of treatments, such as:
- Gentle mobility exercises
- Stretching based on your stage of recovery
- Manual therapy, such as joint mobilization or assisted range of motion
- Strengthening exercises when movement begins to improve
- Education on sleep positions, activity pacing, and safe home exercises
- Pain-management strategies, which may include heat, ultrasound, electrotherapy, or other clinic-based modalities when appropriate
As treatment progresses, the focus often shifts toward restoring range of motion and rebuilding shoulder strength. Your physiotherapist can help you move at the right level, so you are not forcing the shoulder too aggressively or avoiding movement longer than needed.
Why getting the right diagnosis for treating frozen shoulder matters
Frozen shoulder can look like other shoulder conditions, including rotator cuff injuries, shoulder arthritis, bursitis, or referred pain from the neck. That is why an accurate assessment matters.
Frozen shoulder can often be diagnosed based on symptoms and a physical assessment. In some cases, imaging, such as an X-ray or MRI, may be used to rule out other causes of shoulder pain.
A Lifemark physiotherapist can assess your shoulder pain and mobility and build a rehabilitation plan around your specific needs and goals.
When to seek help for frozen shoulder
It’s worth reaching out to a physiotherapist or other healthcare professional if:
- Your shoulder pain has been present for several weeks and is not improving
- You’re noticing that certain movements particularly reaching behind your back or overhead, are becoming increasingly difficult
- Your sleep is being disrupted by shoulder discomfort
- You recently had a surgery, an illness, or an injury that kept your arm still for an extended period
- You have diabetes or a thyroid condition and are noticing new shoulder stiffness
You do not have to wait until shoulder pain feels unbearable. Getting assessed early can help you understand what is causing your symptoms and what type of care may be appropriate.
Find a physiotherapist near me
Key takeaways
- Frozen shoulder, or adhesive capsulitis, causes shoulder pain, stiffness, and reduced range of motion.
- It often develops gradually and may move through freezing, frozen, and thawing phases.
- It can follow an injury, surgery, or certain health conditions or sometimes develops without a clear cause.
- Daily tasks and movements like dressing and reaching overhead or behind your back, and sleep are often the first things noticeably affected.
- Physiotherapy can help manage pain, improve movement, rebuild strength, and support daily function.
FAQs
How long does frozen shoulder last?
Frozen shoulder can take several months to three years to improve, though the timeline varies from person to person. With the right treatment plan, many people find they can manage pain and stay active during recovery.
Is frozen shoulder the same as a rotator cuff injury?
No, frozen shoulder and rotator cuff injuries are different conditions. Frozen shoulder involves stiffness and tightening of the shoulder capsule. A rotator cuff injury involves irritation, strain, or tearing of the muscles and tendons that help move and stabilize the shoulder. Both can cause pain and limit movement, but they are treated differently. That is why an accurate diagnosis matters.
Can frozen shoulder go away on its own?
Frozen shoulder can improve over time, but the recovery is often slow. Physiotherapy can help manage pain, guide safe movement, and support the return of shoulder mobility.
Why is frozen shoulder more common in people with diabetes?
The exact reason is not fully understood. One theory is that changes in connective tissue and collagen may make the shoulder capsule more likely to become stiff and restricted. People with diabetes are encouraged to monitor new shoulder pain or stiffness and speak with a healthcare professional early.
What can I do at home to support my shoulder?
Your physiotherapist can help guide you on safe home exercises for your stage of recovery. In general, gentle and consistent movement tends may help, but the right exercises depend on your pain level, range of motion, and stage of frozen shoulder.
Can frozen shoulder come back?
Frozen should is less likely to return in the same shoulder after it resolves, but it can develop in the opposite shoulder. Maintaining shoulder movement and strength may help support long-term shoulder function.
If you're dealing with shoulder pain or stiffness that's getting in the way of your daily life, see how a Lifemark physiotherapist can help.
