National Association for Pseudoxanthoma Elasticum - Nonprofit US organization dedicated to providing support services and information to those affected by pseudoxanthoma elasticum. - http://www.pxenape.org/
The PXE Support Group - PiXiE - UK support group, helping PXE patients and research into the condition. - http://www.pxe.org.uk/
VhiHealth-e - A definition of Pseudoxanthoma elasticum followed by a description, causes and symptoms, diagnosis, treatment options, prognosis and prevention. - http://www2.vhi.ie/topic/topic100587360
NORD: Pseudoxanthoma Elasticum - Offers a general discussion and resources for PXE. - http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Pseudoxanthoma%20Elasticum%20%28PXE%29
PXE International - The comprehensive source for pseudoxanthoma elasticum research and world wide activities. - http://pxe.org