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) |
| Abnormality of temperature regulation | 90% |
| Migraine | 90% |
| Abdominal pain | 50% |
| Arthralgia | 50% |
| Pruritus | 50% |
| Skin rash | 50% |
| Ascites | 7.5% |
| Bruising susceptibility | 7.5% |
| Diarrhea | 7.5% |
| Epistaxis | 7.5% |
| Gastrointestinal hemorrhage | 7.5% |
| Gingival bleeding | 7.5% |
| Hepatomegaly | 7.5% |
| Hypoproteinemia | 7.5% |
| Hypotension | 7.5% |
| Intracranial hemorrhage | 7.5% |
| Leukopenia | 7.5% |
| Nausea and vomiting | 7.5% |
| Reduced consciousness/confusion | 7.5% |
| Sudden cardiac death | 7.5% |
| Thrombocytopenia | 7.5% |
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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.
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