Albright's Hereditary Osteodystrophy: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Albright's Hereditary Osteodystrophy?
An endocrinologist, a doctor who treats hormone problems, usually treats Albright's hereditary osteodystrophy. A clinical geneticist, a doctor who treats inherited conditions, can confirm the diagnosis. Some people also see an orthopedic surgeon, a bone and joint surgeon. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Albright's Hereditary Osteodystrophy?
Albright's hereditary osteodystrophy, or AHO, is a rare genetic disorder. It affects how bones grow and how hormones work in the body. People with AHO often have short height, a round face, and unusually short finger and toe bones. Some also form small pieces of bone under the skin. Doctors call this ectopic ossification, which means bone growing in the wrong place.
AHO comes from a change in a gene called GNAS. This gene holds the code for part of a G protein, which helps cells respond to hormones. Depending on which parent passes on the change, hormone problems may or may not occur.
Symptoms
The most common bone and joint feature is brachydactyly, which means short finger and toe bones. It often shortens the long bones inside the palm of the hand. Other signs include:
- Short height that becomes clear as a child grows.
- A round face.
- Small bone deposits under the skin, most often on the scalp, hands, and feet.
- Overweight that can start in infancy and is hard to treat.
- Hormone problems. The body may not respond to parathyroid hormone (PTH), the hormone that controls calcium and phosphate. This can cause low calcium in the blood. Thyroid hormone resistance can also occur.
- Learning disability or developmental delay in some people.
- Numbness or tingling in the hands from carpal tunnel syndrome (a squeezed nerve in the wrist).
Causes and who gets it
AHO is caused by a change in the GNAS gene. It is inherited in an autosomal dominant way. That means one copy of the changed gene is enough to have the condition. Which parent passes on the change matters. A change from the mother usually brings hormone resistance. That form is called pseudohypoparathyroidism. A change from the father usually brings AHO without hormone problems. That form is called pseudopseudohypoparathyroidism.
For about 38% of people, a parent has it too. For another 38%, the gene change is new in the family.
How doctors diagnose it
Doctors look at body features and order blood tests. The tests check levels of PTH, calcium, phosphate, and thyroid hormones such as TSH and free T4. TSH is the hormone that tells the thyroid gland to work. X-rays of the hands can show shortened bones.
Genetic testing confirms the diagnosis. It looks for a change in the GNAS gene or in the switches that control it. Testing may also show which parent the change came from, which helps predict if hormone problems will occur.
Treatment
Treatment depends on which problems a person has. Hormone resistance is treated in the standard way. Doctors treat low calcium with calcium supplements and active forms of vitamin D. Thyroid hormone is added when the thyroid does not make enough. Growth hormone may help if testing shows a deficiency.
Bone deposits under the skin that are near the surface and have clear borders can be removed with surgery if they are large or cause irritation. They may come back after removal. Weight can be the hardest problem to treat. In the forms with hormone resistance, the body burns less energy at rest, so eating less and moving more may work less well than for other people.
Doctors track growth and hormone levels over time. Keeping calcium and phosphate levels in a normal range helps lower the risk of cataracts and calcium deposits in the brain.
When to see a doctor
See a doctor if a child is much shorter than other children or has short fingers and toes with a round face. Low blood calcium can cause muscle cramps and twitching. Untreated low calcium can lead to tetany (muscle cramps), seizures, or a spasm of the voice box. If a seizure or a spasm of the voice box happens, call 911 right away.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either doctor can track growth over time and order calcium and thyroid blood tests. They can also coordinate care among the specialists who treat this condition.
Common questions
Is Albright's hereditary osteodystrophy inherited?
Yes. It follows an autosomal dominant pattern, so each child of an affected parent has a 50% chance of inheriting the gene change. Which parent passes on the change shapes which form a child has.
What is the difference between pseudohypoparathyroidism and pseudopseudohypoparathyroidism?
Both cause the AHO body features. In pseudohypoparathyroidism, the body does not respond well to PTH and other hormones. Obesity is common. In pseudopseudohypoparathyroidism, calcium and hormone levels are normal, and obesity is less common or absent.
Why is weight gain such a problem?
In the forms with hormone resistance, the body burns less energy at rest, and hunger can be strong. Because of this, the usual advice to eat less and move more may work less well. Doctors still track weight closely.
Can the bone deposits under the skin be removed?
Yes, when they are near the surface with clear borders and are large or cause irritation. A surgeon can remove them. They may recur if removal is incomplete, but removal does not make the condition worse.
Sources
- NCBI Bookshelf - Disorders of GNAS Inactivation (GeneReviews)
- MedlinePlus Genetics - GNAS gene
- NIH Genetic and Rare Diseases Information Center - Pseudopseudohypoparathyroidism
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
