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) |
| Migraine | 90% |
| Spontaneous abortion | 90% |
| Abnormality of the endocardium | 50% |
| Abnormality of the heart valves | 50% |
| Cerebral ischemia | 50% |
| Coronary artery disease | 50% |
| Cutis marmorata | 50% |
| Memory impairment | 50% |
| Subcutaneous hemorrhage | 50% |
| Thrombophlebitis | 50% |
| Abnormality of coagulation | 7.5% |
| Abnormality of extrapyramidal motor function | 7.5% |
| Abnormality of the pleura | 7.5% |
| Aseptic necrosis | 7.5% |
| Chorea | 7.5% |
| Dermal atrophy | 7.5% |
| Gangrene | 7.5% |
| Gastrointestinal infarctions | 7.5% |
| Hemiballismus | 7.5% |
| Hemiplegia/hemiparesis | 7.5% |
| Hemoptysis | 7.5% |
| Hepatomegaly | 7.5% |
| Hyperreflexia | 7.5% |
| Hypertensive crisis | 7.5% |
| Hypertrophic cardiomyopathy | 7.5% |
| Paresthesia | 7.5% |
| Portal hypertension | 7.5% |
| Proteinuria | 7.5% |
| Pulmonary hypertension | 7.5% |
| Pulmonary infiltrates | 7.5% |
| Renal insufficiency | 7.5% |
| Seizures | 7.5% |
| Skin ulcer | 7.5% |
| Thrombocytopenia | 7.5% |
| Visual impairment | 7.5% |
| Arterial thrombosis | - |
| Autoimmune thrombocytopenia | - |
| Autosomal dominant inheritance | - |
| Venous thrombosis | - |
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.
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.
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.
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.
The following diseases are related to Antiphospholipid syndrome. If you have a question about any of these diseases, you can contact GARD.
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
My question is: Epilepsy and Protein S Deficiency are they auto-immune disorders? See answer
Can you provide me with the latest figures for patients with antiphospholipid syndrome in the United States and in the United Kingdom, as well as the percentage of the world population affected by this condition?
See answer
Have there been any trials involving plasma exchange to treat antiphospholipid antibody syndrome? Have any benefits or pitfalls been identified? See answer
Can lupus, antiphospholipid syndrome, and ITP antibodies occur together? How is this treated? See answer
