who gets a frozen shoulder: causes and risks
Who gets a frozen shoulder? It most often affects adults between 40 and 60, especially women and people with diabetes or certain thyroid conditions. It can also follow an injury, surgery, or another problem that keeps the shoulder still for a long time.
But many people develop it without a clear cause, and having a risk factor does not mean you will get it. This article explains who is more likely to develop the condition, how it progresses, what may help, and when shoulder pain needs medical attention.
Who gets a frozen shoulder?
Frozen shoulder, also called adhesive capsulitis, is a condition in which the tissue surrounding the shoulder joint becomes irritated and tight. The shoulder gradually becomes painful and harder to move. It is most common in adults aged 40 to 60, and women are affected somewhat more often than men.
It can happen in people with no obvious trigger. In other cases, it develops after an injury, operation, or illness that limits shoulder movement. The condition is not caused by cold weather or by the shoulder joint literally freezing.
Having a risk factor raises the chance of developing the condition, but it does not make the outcome certain. Many people with diabetes or thyroid disease never have a frozen shoulder, and many people who develop one have no known risk factor.
Groups with a higher chance
- Adults in midlife: The condition is seen most often between ages 40 and 60. It is less common in younger adults and older adults.
- Women: Women are affected more often than men, though frozen shoulder can occur in anyone.
- People with diabetes: Diabetes is one of the clearest health-related risk factors. The condition may affect either shoulder and can be harder to resolve.
- People with thyroid disorders: Both underactive and overactive thyroid conditions are associated with greater risk.
- People whose shoulder has been kept still: A sling, surgery, injury, stroke, or other health problem can reduce movement. Prolonged immobility may contribute to stiffness.
Why diabetes and thyroid conditions matter
Frozen shoulder is linked with changes in the joint capsule, a strong layer of tissue that surrounds the shoulder. In this condition, the capsule can become inflamed, thickened, and less flexible. The exact reasons this process starts are not fully understood.
Diabetes is strongly associated with the condition, but the link does not mean that one automatically causes the other. Blood sugar problems may affect connective tissue, which helps support joints, but the reasons for the association are complex. People with diabetes may also experience symptoms for longer or have stiffness that is more difficult to treat.
Thyroid disorders are also associated with increased risk. The relationship is not a simple, direct cause-and-effect rule. If you have a thyroid condition, continue the treatment plan recommended by your clinician; do not change medication because of shoulder pain.
Other health issues, including Parkinson’s disease and stroke, may be connected with frozen shoulder. Reduced movement after an illness can be one factor. A clinician can help distinguish adhesive capsulitis from weakness, nerve problems, arthritis, or other causes of limited movement.
Can an injury or surgery lead to frozen shoulder?
Yes. Frozen shoulder can develop after an injury or operation if pain or medical instructions lead you to move the shoulder much less than usual. It may follow a fracture, rotator cuff problem, or surgery involving the shoulder or nearby area. It can also appear after a health event that limits arm movement.
Stillness is sometimes necessary for healing, so do not ignore restrictions or remove a sling early without medical advice. The practical goal is to follow your clinician’s movement instructions and begin safe, appropriate motion when permitted. Ask how much movement is allowed, which movements to avoid, and when to increase activity.
Not every stiff shoulder after an injury is adhesive capsulitis. A tendon injury, fracture, arthritis, or nerve problem can cause similar symptoms and may need different care. Get an assessment if pain or restricted movement is worsening, lasts beyond the expected recovery period, or interferes with dressing, sleep, or daily tasks.
Risk factors and possible triggers compared
| Factor | How it may relate | What to keep in mind | Best next step |
|---|---|---|---|
| Diabetes | Strongly associated with frozen shoulder and sometimes a longer recovery. | It increases risk, but does not guarantee the condition. | Discuss persistent shoulder stiffness with a clinician and keep up with diabetes care. |
| Thyroid disorder | Both underactive and overactive thyroid conditions are associated with higher risk. | The association does not prove that thyroid disease directly caused the shoulder problem. | Continue prescribed care and mention the thyroid condition at an appointment. |
| Reduced shoulder movement | Immobility after injury, surgery, or illness may contribute to stiffness. | Some periods of protection are medically necessary. | Ask for clear guidance on safe movement and when to start it. |
| Age and sex | Most often occurs in midlife and is somewhat more common in women. | People outside these groups can still develop it. | Use symptoms and examination, not demographics alone, to assess the cause. |
| No clear trigger | Many cases arise without an identifiable event or condition. | Not knowing the cause does not mean the symptoms are imagined. | Seek care if pain and stiffness persist or limit everyday movement. |
What does frozen shoulder feel like?
The main signs are shoulder pain and gradually reduced movement. Pain may be noticeable at rest or become sharper when you reach, lift your arm, or rotate it. Many people find it difficult to reach behind their back, put on a coat, or lift an object onto a shelf.
Sleep can be difficult, especially if you lie on the affected side. Stiffness may make even simple tasks frustrating. The shoulder may feel restricted in several directions, not just in one movement.
A clinician may compare your active movement, which you perform yourself, with passive movement, which the clinician gently guides. In adhesive capsulitis, both are often limited. This pattern helps distinguish it from some problems where you cannot move well on your own but the joint can move farther when guided.
These symptoms do not confirm a diagnosis on their own. Rotator cuff conditions, arthritis, neck problems, and other issues can also cause shoulder pain or restricted movement. A medical assessment is useful when the symptoms are significant, persistent, or changing.
How frozen shoulder typically progresses
The condition is often described in three overlapping stages. The timing varies from person to person, and not everyone experiences a neat progression. Symptoms can last many months and sometimes longer, so it is not helpful to assume that recovery will happen on a fixed schedule.
- Freezing stage: Pain increases and movement gradually becomes more limited. Reaching or turning the arm may hurt, and night pain is common.
- Frozen stage: Pain at rest may ease, but the shoulder remains stiff. Everyday movements, such as reaching overhead or behind your back, can still be difficult.
- Thawing stage: Movement gradually improves. Progress can be slow, and the shoulder may not regain its full range without treatment or rehabilitation.
The stages can overlap, and the pattern is not identical for everyone. A shoulder that is less painful is not necessarily fully recovered if it remains very stiff. Track useful changes, such as improved sleep, easier dressing, and how far you can comfortably reach.
How clinicians assess the cause
Diagnosis usually starts with questions about when the pain began, how it has changed, and whether an injury, operation, or illness came first. The clinician may ask about diabetes, thyroid disease, medications, and how the symptoms affect daily life.
A physical examination checks how far you can move the arm yourself and how far it moves with gentle assistance. The clinician may also assess strength, sensation, and the neck to look for other explanations. A pattern of restricted movement in several directions can support a frozen shoulder diagnosis.
Imaging is not always needed to identify adhesive capsulitis. An X-ray may be used to look for arthritis or another bone-related cause. Ultrasound or MRI may be considered when the examination suggests a tendon injury or another condition. Tests should be chosen to answer a specific clinical question, rather than assumed to be necessary for every sore shoulder.
Treatment options and what each one can do
Treatment aims to reduce pain and restore useful movement. The right approach depends on the stage, how severe the symptoms are, your general health, and whether another condition is contributing. A clinician or physical therapist can help set a safe plan.
| Option | What it may help with | Best for |
|---|---|---|
| Guided home movement | Maintains comfortable motion and supports gradual mobility. | Mild to moderate stiffness when a clinician has confirmed which movements are suitable. |
| Physical therapy | Provides tailored mobility exercises and guidance on pacing. | People who need help adapting movement to pain and stiffness. |
| Pain-relief medicine | May reduce discomfort enough to support sleep and movement. | People who can safely use the recommended medicine after checking risks and instructions. |
| Corticosteroid injection | May reduce pain, particularly earlier in the condition, for some people. | Selected cases where pain is limiting movement and a clinician considers an injection appropriate. |
| Other procedures | May be considered to improve motion when severe stiffness persists. | People with substantial ongoing limitations despite a suitable nonsurgical plan. |
Movement and physical therapy
Gentle movement is often part of care, but the goal is not to force the shoulder through intense pain. A physical therapist can show you how to work within a tolerable range and adjust the plan as symptoms change. Exercises may involve supported reaching or gentle rotation, but the specific movements should suit your shoulder and medical situation.
Do not treat pain as a target to push through. Aggressive stretching can aggravate symptoms and make it harder to stay active. A mild pulling sensation may be acceptable in some plans, but sharp or escalating pain is a reason to stop and ask for guidance.
Pain relief and injections
A clinician may recommend an appropriate pain reliever or anti-inflammatory medicine, depending on your health and other medications. These medicines are not safe for everyone. Ask a doctor or pharmacist before using them if you have other health conditions, take other medicines, are pregnant, or are unsure about the correct dose.
A corticosteroid injection into or around the joint may ease pain for some people, particularly earlier in the course. It does not guarantee a full or permanent recovery. It also has risks and may not be suitable for everyone, including some people with diabetes, so discuss possible benefits and downsides with a clinician.
Procedures for persistent stiffness
If severe stiffness continues despite appropriate nonsurgical treatment, a specialist may discuss procedures such as hydrodilatation, manipulation under anesthesia, or arthroscopic release. Hydrodilatation uses fluid injected into the joint to stretch the capsule. Manipulation moves the shoulder while you are under anesthesia, and arthroscopic release uses small instruments to loosen tight tissue.
These options are not routine first steps. They have potential risks, and the right choice depends on your diagnosis and health. A specialist should explain expected benefits, possible complications, and the rehabilitation needed afterward before you decide.
Practical steps that can help protect shoulder movement
- Get persistent symptoms assessed. Early advice can clarify the cause and help you avoid exercises that do not fit your condition.
- Ask for specific movement limits. After an injury or operation, find out what you may move, how often, and when the plan should change.
- Keep activity gentle and regular. If movement is permitted, brief, comfortable practice may be easier to maintain than occasional forceful stretching.
- Adjust tasks temporarily. Bring frequently used items within easy reach, use your other arm when practical, and avoid repeated overhead lifting if it triggers pain.
- Track function as well as pain. Note sleep, dressing, reaching, and changes in movement. These details help your clinician judge whether the plan is working.
A useful point that is often missed: keeping the arm completely still for longer than medically necessary can worsen stiffness, but forcing painful movement can also backfire. The safest approach is not “rest everything” or “stretch as hard as possible.” It is movement matched to the cause, healing stage, and professional advice.
When to seek medical care promptly
Arrange an appointment if shoulder pain or stiffness persists, gets worse, interrupts sleep, or makes daily activities difficult. Seek prompt assessment after a significant injury, especially if you cannot raise your arm or suspect a fracture or dislocation.
Get urgent medical help for shoulder pain with chest pressure, shortness of breath, sweating, faintness, or pain spreading to the jaw or arm, because these may signal a problem unrelated to the shoulder. A hot, red shoulder with fever also needs prompt medical attention. Sudden weakness, numbness, or major loss of function should be assessed rather than assumed to be frozen shoulder.
Do not diagnose the condition solely from the fact that your shoulder feels stiff. The right care depends on what is causing the symptoms, and some alternative causes need different treatment.
Who gets a frozen shoulder most often? Adults in midlife, women, people with diabetes or thyroid disorders, and people whose shoulder has been immobilized have a higher chance, though anyone can develop it without a clear trigger.
If pain and stiffness are limiting your daily activities, book an assessment and ask which movements are safe for you now. Follow a gradual plan rather than forcing painful stretches or keeping the shoulder still longer than advised.