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Paget's Disease of Bone

Topic Overview

Picture of the skeleton

What is Paget's disease?

Paget's disease is a problem of abnormal bone growth. It may affect just one bone, but it usually affects more than one.

  • In normal bone, the bone tissue is constantly being broken down, absorbed into the body, and then rebuilt with new cells.
  • In Paget's disease, bone tissue is broken down and absorbed much faster than normal, so the body speeds up the bone rebuilding process. But this new bone is often weak and brittle, and it breaks easily.

Paget's disease is most common in people older than 50, and the risk of getting it increases with age. Most people who have it are able to lead normal lives.

What causes Paget's disease?

The cause of Paget's disease is not clear. But it may be related to:

  • Genetics . You're more likely to get Paget's disease if your parents, brothers, or sisters have it.
  • Viruses. The viruses linked to measles in people and distemper in dogs have been found in the bones of people with Paget's disease. But there's no proof that these viruses cause this disease.

What are the symptoms?

Most people with Paget's disease have no symptoms. When symptoms occur, the most common ones are:

  • Bone pain. It may be worse at night and get better with exercise. People often mistake the pain for normal aging or arthritis.
  • Deformed bones, such as bowed legs, an enlarged skull or hips, or a curved backbone.
  • Broken bones, or fractures.

Other symptoms may occur, depending on which part of the body is affected by Paget's disease.

  • If it affects the skull, you may have symptoms such as headaches, sagging face muscles (facial droop), hearing problems, or loose teeth.
  • If it affects the spine, it may damage nerves and cause leg pain, numbness, or weakness. It can also cause an emergency condition called cauda equina syndrome that results in loss of feeling in the pelvic area and legs.

How is Paget's disease diagnosed?

Paget's disease is most often found by chance when a person sees a doctor for a problem such as hip or back pain. An abnormal X-ray or blood test may lead the doctor to discover this disease.

To diagnose Paget's disease, the doctor will ask about your past health, do a physical exam, and order tests such as:

  • Bone X-rays. Affected bones often look deformed and too thick on X-rays.
  • Bone scan. This is the best test for diagnosing Paget's disease. You may have a bone scan of your whole body to find out which bones are affected.
  • Blood and urine tests. The most important one for diagnosing Paget's disease is a blood test for alkaline phosphatase, an enzyme made by bone. If the level of this enzyme is high, your doctor will want to do other tests.

You might also need other tests, such as an MRI or a CT scan.

How is it treated?

Many people don't need treatment for Paget's disease. But even if you don't need treatment, you will still need to see your doctor on a regular basis from now on. This will let your doctor watch for other problems you might get from the disease, such as arthritis, fractures, or nerve problems.

If you have symptoms or are at risk for other problems from the disease, your doctor may prescribe medicine. Medicine can help reduce the breakdown of bone tissue, control symptoms such as bone pain, and prevent other problems such as arthritis.

  • Bisphosphonates are usually the first medicines prescribed for Paget's disease. They often make the disease inactive, sometimes for years or decades. If it becomes active again, you may need to take this medicine off and on to keep the disease under control.
  • Calcitonin may be prescribed if you have problems with bisphosphonates. It has similar benefits.

If you still have pain while taking your prescribed medicine, you can try:

  • An over-the-counter pain reliever such as acetaminophen, naproxen, or ibuprofen.
  • Acupuncture or relaxation techniques such as guided imagery or biofeedback.

You might also need other treatments, such as:

  • Physical therapy to build your muscles and improve your balance. This can help reduce falls and prevent broken bones.
  • Splints or braces to support your bones and joints and to help keep weak bones from breaking.
  • A cane or walker to help you avoid falling and breaking a bone.
  • A hearing aid if the disease has caused hearing loss.

Some people may need surgery to replace a damaged hip or knee joint.

What can you do at home for Paget's disease?

There are many things you can do to help yourself when you have Paget's disease.

  • Learn ways to manage your pain. For example, you might keep a pain diary to find out what makes your pain better or worse.
  • Take care to avoid falls. For example, keep your home's walkways free of clutter and electric cords. Put grab bars in your bathroom.
  • Do weight-bearing exercise to keep your bones strong. Walking, dancing, or lifting weights may be good, but make sure that you don't put stress on affected bones. Your doctor or physical therapist can suggest exercises for you.
  • Eat a healthy diet that includes plenty of calcium and vitamin D. You need both to build strong bones.

Other Places To Get Help


American Academy of Orthopaedic Surgeons (AAOS)
6300 North River Road
Rosemont, IL  60018-4262
Phone: (847) 823-7186
Fax: (847) 823-8125
Web Address:

The American Academy of Orthopaedic Surgeons (AAOS) provides information and education to raise the public's awareness of musculoskeletal conditions, with an emphasis on preventive measures. The AAOS website contains information on orthopedic conditions and treatments, injury prevention, and wellness and exercise.

National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health
1 AMS Circle
Bethesda, MD  20892-3675
Phone: 1-877-22-NIAMS (1-877-226-4267) toll-free
Phone: (301) 495-4484
Fax: (301) 718-6366
TDD: (301) 565-2966
Web Address:

The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) is a governmental institute that serves the public and health professionals by providing information, locating other information sources, and participating in a national federal database of health information. NIAMS supports research into the causes, treatment, and prevention of arthritis and musculoskeletal and skin diseases and supports the training of scientists to carry out this research.

The NIAMS website provides health information referrals to the NIAMS Clearinghouse, which has information packages about diseases.

NIH Osteoporosis and Related Bone Diseases—National Resource Center
2 AMS Circle
Bethesda, MD 20892-3676
Phone: (202) 223-0344
Phone: 1-800-624-BONE (1-800-624-2663)
Fax: (202) 293–2356
TDD: (202) 466-4315
Web Address:

The NIH Osteoporosis and Related Bone Diseases—National Resource Center is a government resource center that helps health professionals, patients, and the public learn about and locate current information on metabolic bone diseases such as osteoporosis, Paget's disease, osteogenesis imperfecta, and hyperparathyroidism.

Paget Foundation for Paget's Disease of Bone and Related Disorders
120 Wall Street
Suite 1602
New York, NY  10005-4001
Phone: (212) 509-5335

1-800-23-PAGET (1-800-237-2438)
Fax: (212) 509-8492
Web Address:

The Paget Foundation for Paget's Disease of Bone and Related Disorders is a voluntary health agency devoted to serving people affected by Paget's disease of bone. The foundation provides affected individuals and their families with up-to-date information about Paget's disease and refers people diagnosed with Paget's disease to doctors who specialize in treating this disorder. It also assists health professionals who treat this disorder. The foundation produces educational and support materials including brochures, pamphlets, audiovisual aids, a newsletter titled Update, and a guide for people affected by Paget's disease to raise public awareness of this and related disorders.


By Healthwise Staff
Primary Medical Reviewer Anne C. Poinier, MD - Internal Medicine
Specialist Medical Reviewer Jennifer Hone, MD - Endocrinology, Diabetes and Metabolism
Last Revised February 25, 2013

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