The Human Phenotype Ontology (HPO) provides the following list of features that have been reported in people with this condition. Much of the information in the HPO comes from Orphanet, a European rare disease database. If available, the list includes a rough estimate of how common a feature is (its frequency). Frequencies are based on a specific study and may not be representative of all studies. You can use the MedlinePlus Medical Dictionary for definitions of the terms below.
| Signs and Symptoms | Approximate number of patients (when available) |
| Abnormal facial shape | 90% |
| Craniosynostosis | 90% |
| Frontal bossing | 90% |
| High forehead | 90% |
| Arnold-Chiari malformation | 50% |
| Conductive hearing impairment | 50% |
| Hypertelorism | 50% |
| Increased intracranial pressure | 50% |
| Ptosis | 50% |
| Strabismus | 50% |
| Abnormality of the palate | 7.5% |
| Abnormality of the sacrum | 7.5% |
| Acanthosis nigricans | 7.5% |
| Aplasia/Hypoplasia of the cerebellum | 7.5% |
| Atresia of the external auditory canal | 7.5% |
| Choanal atresia | 7.5% |
| Convex nasal ridge | 7.5% |
| Hydrocephalus | 7.5% |
| Hypopigmented skin patches | 7.5% |
| Intellectual disability | 7.5% |
| Iris coloboma | 7.5% |
| Melanocytic nevus | 7.5% |
| Migraine | 7.5% |
| Optic atrophy | 7.5% |
| Respiratory insufficiency | 7.5% |
| Visual impairment | 7.5% |
| Abnormality of the cervical spine | - |
| Abnormality of the nasopharynx | - |
| Autosomal dominant inheritance | - |
| Brachycephaly | - |
| Conjunctivitis | - |
| Coronal craniosynostosis | - |
| Craniofacial dysostosis | - |
| Dental crowding | - |
| Hypoplasia of the maxilla | - |
| Lambdoidal craniosynostosis | - |
| Mandibular prognathia | - |
| Sagittal craniosynostosis | - |
| Seizures | - |
| Shallow orbits | - |
| Sleep apnea | - |
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.
The resources below provide information about treatment options for this condition. If you have questions about which treatment is right for you, talk to your healthcare professional.
Nonprofit support and advocacy groups bring together patients, families, medical professionals, and researchers. These groups often raise awareness, provide support, and develop patient-centered information. Many are the driving force behind research for better treatments and possible cures. They can direct people to research, resources, and services. Many groups also have experts who serve as medical advisors. Visit their website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD. Suggest an organization to add.
Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.
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.
Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question
I have Crouzon and my mother has it. I have a sister and a brother younger than me that don't have it. Is it possible for either of them to have children with it and what are the chances? See answer
I'm looking into having kids with my spouse. I have Crouzon syndrome and I was wondering if my child is guaranteed to have it. My mom has it but neither of her parents did. I'm very concerned. See answer
