NCIt definition : An autosomal dominant inherited vascular disorder associated with loss of function
mutations in the RASA1 or EPHB4 gene, encoding Ras GTPase-activating protein 1 or
ephrin type-B receptor 4, respectively. It is characterized by cutaneous capillary
malformations, often in association with arteriovenous malformations and arteriovenous
fistulas, which may lead to abnormal bleeding, migraine headaches, seizures, and heart
failure.;