Paget’s Disease of Bone: Bone Pain, Deformity, and Imaging Tests

Paget’s disease of bone is a long-term disorder in which normal bone remodeling becomes disorganized, leading to enlarged, weaker, or misshapen bones. Many people have no symptoms at first, but others may develop bone pain, deformity, hearing changes, or fractures that are often identified with blood tests and imaging.

Overview

Paget’s disease of bone is a chronic condition that affects the normal process of bone remodeling. In healthy bone, old bone tissue is continuously broken down and replaced with new bone in a balanced way. In Paget’s disease, this process becomes too active and disorganized, so the body makes new bone more quickly than usual, but the new bone may be larger, weaker, and less structured.

The condition most often affects older adults and commonly involves the pelvis, spine, skull, femur, or tibia. A person may have one bone involved or several. Some people learn they have the condition only after an abnormal blood test or imaging study done for another reason.

Paget’s disease is not a cancer, although its complications can affect quality of life if the condition is not recognized and monitored. With proper evaluation and treatment, many people can manage symptoms well and reduce the risk of fractures, deformity, and other bone-related problems.

Symptoms

Many people with Paget’s disease of bone have no obvious symptoms, especially early on. When symptoms do occur, the most common is a deep, persistent bone pain. This pain may feel dull or aching and can worsen at night or with pressure on the affected area.

Other symptoms depend on which bones are involved. If the legs are affected, the bones may gradually bow or change shape. If the skull is involved, a person may notice an increase in head size, headaches, or hearing loss. When the spine is affected, nerve pressure can sometimes lead to tingling, numbness, or weakness.

Possible signs and complications include:

• Bone pain or joint pain near the affected bone
• Bone deformity, such as bowed legs
• Fractures after minor injury
• Warmth over the affected bone due to increased blood flow
• Hearing changes if the skull is involved
• Back pain or nerve symptoms when the spine is affected

Joint symptoms can also develop because abnormal bone shape changes the way nearby joints work. Over time, this may contribute to wear and tear similar to osteoarthritis, especially in weight-bearing joints.

Causes and Risk Factors

The exact cause of Paget’s disease of bone is not fully understood. Experts believe it may result from a combination of genetic and environmental factors. In some families, the condition appears in more than one person, suggesting that inherited changes can increase the risk.

Age is one of the strongest risk factors. Paget’s disease is seen more often in older adults than in younger people. Family history also matters, and a person may be more likely to develop it if a close relative has the disease. Some populations are affected more often than others, although the reasons are still being studied.

Paget’s disease is not caused by routine activity, diet alone, or common minor injuries. It also is not contagious. Even when symptoms are mild, proper evaluation is important because active disease can slowly affect bone strength and structure over time.

Diagnosis and Imaging Tests

Diagnosis usually begins with a medical history, symptom review, and physical examination. A doctor may suspect Paget’s disease based on bone pain, deformity, hearing changes, or an abnormality found on an X-ray done for another reason. Blood tests can provide important clues, especially when they show an elevated alkaline phosphatase level, which may reflect increased bone turnover.

Imaging tests are central to diagnosis. Standard X-rays often show the characteristic bone enlargement, thickening, and mixed areas of bone breakdown and repair seen in Paget’s disease. In some cases, a doctor may recommend X-ray imaging as the first step and then use additional tests to understand how extensive the disease is.

A bone scan may be used to identify all affected areas in the skeleton, even when symptoms are present in only one place. In selected situations, cross-sectional imaging such as MRI or computed tomography (CT) can help evaluate complications, nerve compression, fractures, or uncertainty in the diagnosis.

Because other bone conditions can look similar, doctors may also consider different causes of bone pain or abnormal imaging findings. These can include fractures, arthritis, infection, and other metabolic bone disorders such as osteoporosis, depending on the person’s age, symptoms, and test results.

Treatment Options

Treatment depends on whether the disease is active, which bones are involved, and whether symptoms or complications are present. People with no symptoms may not need immediate medication, but they usually benefit from periodic follow-up. Those with bone pain, active disease in high-risk areas, or complications may be offered treatment to slow the abnormal bone remodeling process.

The main medicines used are bisphosphonates, which help reduce excessive bone turnover. These drugs may improve pain, lower alkaline phosphatase levels, and decrease the chance of future complications in some patients. Pain-relieving medicines may also be used when needed, depending on the person’s general health and symptoms.

Supportive care is also important. Physical therapy may help maintain mobility, muscle strength, and balance. Assistive devices, shoe modifications, or braces can sometimes improve comfort and reduce stress on affected bones and joints.

Surgery is not needed for everyone, but it may be considered for certain complications, such as severe deformity, fractures, significant arthritis, or nerve compression. In patients with advanced joint damage, procedures such as joint replacement surgery may be discussed when appropriate. Care should be individualized and guided by a qualified specialist.

Prevention and Self-care

There is no known way to completely prevent Paget’s disease of bone, but self-care can support bone health and help reduce complications. Following a doctor’s plan, attending follow-up appointments, and reporting new symptoms promptly are all important parts of long-term care.

General bone-health habits may include adequate calcium and vitamin D intake if recommended by a doctor, regular low-impact physical activity, and fall prevention at home. Exercise can help maintain strength and balance, but high-impact activity may need to be adjusted if bones are weakened or painful.

Helpful self-care steps may include:

• Taking prescribed medicines exactly as directed
• Staying physically active within safe limits
• Using supportive footwear and mobility aids if advised
• Reducing fall risks by improving lighting and removing tripping hazards
• Keeping follow-up blood tests and imaging appointments

People should avoid assuming that all bone pain is a normal part of aging. Early assessment can make a meaningful difference in preventing deformity or fracture, especially in bones that carry weight or protect nerves and hearing.

When to See a Doctor

A person should speak with a doctor if they have ongoing bone pain, changes in bone shape, unexplained fractures, new hearing problems, or persistent back pain with numbness or weakness. These symptoms do not always mean Paget’s disease is present, but they deserve medical attention and proper evaluation.

People who have been diagnosed with Paget’s disease should seek medical review if symptoms worsen, new bones become painful, or mobility declines. Follow-up is especially important when the skull, spine, pelvis, or major leg bones are involved, because these areas may be linked to more significant complications.

For international patients who need assessment or treatment, Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals diagnose and manage bone disorders using modern laboratory testing and imaging. A clear diagnosis helps guide the most suitable treatment and follow-up plan for each individual.

Frequently asked questions

Is Paget’s disease of bone the same as osteoporosis?

No. Both conditions affect bone, but they are different disorders. Paget’s disease involves abnormal, disorganized bone remodeling in specific areas, while osteoporosis usually causes a generalized loss of bone density throughout the skeleton.

Can Paget’s disease of bone cause hearing loss?

Yes, it can when the skull is affected. Changes in the bones around the ear may interfere with hearing, so hearing symptoms should be discussed with a doctor.

Does everyone with Paget’s disease need treatment?

Not always. Some people have mild disease with no symptoms and may only need monitoring. Treatment is more often recommended when the disease is active, painful, or affecting high-risk bones such as the skull, spine, or weight-bearing bones.

Which test is most useful for diagnosis?

Diagnosis often uses a combination of tests rather than one single test. X-rays are very helpful for seeing typical bone changes, and a blood test showing elevated alkaline phosphatase can support the diagnosis. A bone scan may be added to find all affected bones.

Can Paget’s disease of bone be cured?

There is no complete cure, but it can often be managed effectively. Medicines can slow abnormal bone turnover, reduce symptoms, and help lower the risk of complications. Regular follow-up remains important over time.

Is Paget’s disease of bone hereditary?

It can run in families in some cases. Having a close relative with Paget’s disease may increase a person’s risk, although not everyone with a family history will develop it.

References

• National Institute of Arthritis and Musculoskeletal and Skin Diseases
• NHS
• Mayo Clinic
• Merck Manual Consumer Version

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.