This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.
|Medical Terms||Other Names||
|80%-99% of people have these symptoms|
|Abnormal blistering of the skin||
Blisters[ more ]
|Abnormality of epiphysis morphology||
Abnormal shape of end part of bone
|Abnormality of hair texture||0010719|
|Abnormality of temperature regulation||
Poor temperature regulation
|Abnormality of the metaphysis||
Abnormality of the wide portion of a long bone
|Abnormality of the ribs||
|Abnormality of visual evoked potentials||0000649|
Low number of red blood cells or hemoglobin
|Bowing of the long bones||
Bowed long bones
Bowing of long bones[ more ]
|Delayed eruption of teeth||
Delayed teeth eruption
Delayed tooth eruption
Late eruption of teeth
Late tooth eruption[ more ]
Retarded growth[ more ]
Hearing defect[ more ]
Too much cerebrospinal fluid in the brain
Swollen lymph nodes
Increased size of skull
Large head circumference[ more ]
Low chest circumference
Narrow shoulders[ more ]
Involuntary, rapid, rhythmic eye movements
|Optic nerve compression||0007807|
Harder, denser, fracture-prone bones
Middle ear infection
|Premature loss of primary teeth||
Early loss of baby teeth
Premature loss of baby teeth[ more ]
Increased fracture rate
Multiple spontaneous fractures
Varying degree of multiple fractures[ more ]
|Recurrent respiratory infections||
Frequent respiratory infections
Multiple respiratory infections
respiratory infections, recurrent
Susceptibility to respiratory infections[ more ]
|Reduced bone mineral density||
Low solidness and mass of the bones
Increased spleen size
Loss of eyesight
Poor vision[ more ]
|5%-29% of people have these symptoms|
|Abnormal pulmonary valve morphology||0001641|
Easy bruising[ more ]
|Cranial nerve paralysis||0006824|
Low blood calcium levels
Low blood phosphate level
Increased blood pressure in blood vessels of lungs
|Pulmonary artery stenosis||
Narrowing of lung artery
|Percent of people who have these symptoms is not available through HPO|
Enlarged liver and spleen
|Optic disc pallor||0000543|
Increased immature red blood cells
Increased number of immature red blood cells[ more ]
|Sclerotic vertebral endplates||0004576|
Low platelet count
Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.
If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.
If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.
You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.
Related diseases are conditions that have similar signs and symptoms. A health care provider may consider these conditions in the table below when making a diagnosis. Please note that the table may not include all the possible conditions related to this disease.
Conditions with similar signs and symptoms from Orphanet
Infantile onset osteopetrosis should be distinguished from the much milder autosomal dominant adult disease and the carbonic anhydrase II deficiency syndrome, which is associated with renal tubular acidosis and less severe osteopetrosis.
Visit the Orphanet disease page for more information.
Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.
Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.
NORD RareLaunch® Workshops
December 1, 2020
NCATS Translational Approach Addresses COVID-19
May 21, 2020
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