![]() ![]() PWS remain throughout life there is no involution. PWS is a progressive vascular malformation of the skin. As a result, the blood vessels are unable to constrict normally and remain permanently dilated. The most likely hypothesis for the development of PWS is the deficiency or absence of surrounding neurons regulating blood flow through the ectatic post-capillary venules. ![]() It is believed that PWS develop within the first 2-8 weeks of gestation. The cause and origin of PWS remains incompletely understood. Detailed studies have documented lower self-esteem and problems with interpersonal relations in PWS patients. PWS should not be considered a cosmetic problem but a disease with potentially devastating psychological and physical complications. Since most of the malformations occur on the face, PWS is a clinically significant problem in the great majority of patients. Check out this Web-MD article or this slideshow of port wine stains at the Mayo clinic. There are no known risk factors or ways to prevent PWS. There appears to be no hereditary predilection for PWS within families. PWS occurs in an estimated 3 children per 1,000 live births, affecting males and females and all racial groups equally. It involves post-capillary venules which produce a light pink to red to dark-red- violet discoloration of human skin. Port Wine Stain/Port Wine Birthmark (Capillary Malformation): Frequently Asked Questions booklet is here! Click the image below to download a free copy of the booklet.Ī Port Wine Stain (PWS) birthmark, also called nevus fla mmeus, is a congenital, cutaneous vascular malformation. Vascular Birthmarks Legislative Initiative.American Academy of Dermatology Guidelines of Care.American Academy of Pediatrics Guidelines for Hemangiomas.
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