Health condition
Juvenile Paget's disease: what to know
Juvenile Paget's disease is an ultra-rare inherited disorder - entirely different from adult Paget's - in which the natural brake on bone resorption (osteoprotegerin) is missing, driving furiously fast bone turnover from infancy with deformity, fractures and deafness.
Why trust this guide
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Editorial team
Written by our editorial team from the UK sources listed on each page.
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Sourced from guidance
Checked against current NHS and UK specialist society guidance at the time of review.
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Current for 2026
Reviewed on 2026-09-27 with the next review scheduled for 2027-09-27.
Key facts
The essentials at a glance.
The symptoms to recognise, when to seek help, which specialist to see, and what treatment usually involves.
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Caused by recessive TNFRSF11B mutations removing osteoprotegerin, so RANKL signalling runs unopposed and the whole skeleton remodels at extreme speed
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Features from early childhood: expanding long-bone deformity, fractures, skull enlargement, progressive deafness and markedly raised alkaline phosphatase
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It is distinct from adult Paget's disease, which is focal, later-onset and not inherited in this way
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Long-term antiresorptive treatment (bisphosphonates; denosumab has a rationale as replacement of the missing brake) reduces turnover and protects the skeleton
Understanding the condition
What it is and what happens next.
What causes it, how it is diagnosed, and the treatment routes available in the UK.
What it is and how it feels
Osteoprotegerin is the decoy receptor that soaks up RANKL, the signal that activates bone-resorbing osteoclasts; children born without it live with a skeleton being dissolved and rebuilt everywhere at once. Untreated, bones bow and thicken, hearing is lost as the ear’s structures remodel, and stature and mobility suffer - which is why early recognition, usually via an unexplained very high ALP in a young child, changes lives.
Diagnosis and treatment routes
Confirmation combines the biochemical picture with genetic testing, and management belongs in a specialist metabolic bone centre with experience of the handful of UK cases: sustained antiresorptive therapy begun early preserves hearing and limb alignment far better than late rescue, orthopaedic and audiology surveillance run alongside, and family genetic counselling addresses the recessive inheritance. Adults diagnosed late still benefit from turnover control and structured fracture prevention. In much of the UK, a routine NHS referral to the relevant specialist clinic can take several months, whereas an initial appointment with a private consultant is typically available within around two weeks.
Seeing a specialist
Who to see, and how quickly you can be seen.
The specialist for this condition is usually a metabolic bone specialist. Your GP can refer you on the NHS, or you can arrange a private consultation directly.
A quiet reminder
This guide is for information, not medical advice.
Your GP knows your history and can tell you which parts apply to you. If in doubt, see them - and seek urgent care for any of the emergency symptoms described above.
Frequently asked
Common questions about Juvenile Paget's disease: what to know.
Quick, plain-English answers to what people ask us most.
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What is juvenile Paget disease?
Juvenile Paget disease is a rare inherited bone disorder causing rapid, excessive bone turnover from early childhood, leading to enlarged, weakened and deformed bones. It is distinct from the more common adult-onset Paget's disease of bone.
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What causes juvenile Paget disease?
It is caused by mutations affecting osteoclast (bone-resorbing cell) regulation, most notably in the TNFRSF11B gene, which normally helps control bone remodelling. It is inherited in an autosomal recessive pattern.
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What are the symptoms of juvenile Paget disease?
Children typically present with bone pain, deformity, fractures, short stature and sometimes hearing loss due to skull bone changes. Symptoms usually appear well before adulthood, unlike classic adult Paget's disease.
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Is juvenile Paget disease serious?
It can significantly affect growth, mobility and hearing if untreated, and fractures are common due to weakened bone. Early diagnosis and treatment can substantially improve bone strength and quality of life.
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Is juvenile Paget disease genetic?
Yes, it is a genetic condition, and genetic testing can confirm the diagnosis and guide family counselling. Parents of an affected child are usually unaffected carriers of the recessive gene.
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Can juvenile Paget disease be treated?
Bisphosphonate medications, which slow bone turnover, are the mainstay of treatment and can markedly improve bone density and reduce pain and fracture risk. Treatment is usually long-term and monitored by a specialist metabolic bone team.
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How is juvenile Paget disease managed?
Management involves bisphosphonate therapy, monitoring bone density and hearing, orthopaedic input for deformities or fractures, and nutritional support to optimise bone health. A multidisciplinary team approach gives the best outcomes.
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How does juvenile Paget disease progress over time?
Without treatment it tends to progress steadily through childhood, but with sustained bisphosphonate treatment many patients see stabilisation or improvement of bone changes. Lifelong monitoring is usually needed even once symptoms are controlled.
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Juvenile Paget disease vs adult Paget's disease — what's the difference?
Juvenile Paget disease is a rare recessive genetic disorder presenting in childhood, while adult Paget's disease is far more common, typically affects people over 50, and usually involves one or a few bones rather than a generalised skeletal process. The underlying genetics and treatment principles differ accordingly.
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When should I see a specialist about juvenile Paget disease, and how quickly can I be seen privately?
A child with unexplained bone pain, deformity, frequent fractures or hearing loss should be referred to a paediatric metabolic bone specialist promptly. Private specialist assessment can often be arranged within about two weeks, much sooner than typical NHS waiting times.