Parkes Weber syndrome
Type of disease: Rare conditions
Parkes Weber syndrome (PWS) is a rare congenital condition causing an individual to have a large number of abnormal blood vessels. The main characteristics of PWS typically include a capillary malformation on the skin; hypertrophy (excessive growth) of the bone and soft tissue of the affected limb; and multiple arteriovenous fistulas (abnormal connections between arteries and veins) which can potentially lead to heart failure. Individuals may also have pain in the affected limb and a difference in size between the limbs. There has been evidence that some cases of PWS are caused by mutations in the RASA1 gene and are inherited in an autosomal dominant manner. Management typically depends on the presence and severity of symptoms and may include embolization or surgery in the affected limb. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.