disease has basis in dysfunction of ABCC6 pseudoxanthoma elasticum (inherited or acquired) inherited pseudoxanthoma elasticum An inheritable form of pseudoxanthoma elasticum (PXE), that causes calcium and other minerals to accumulate in the elastic fibers of the skin, eyes, and blood vessels, and less frequently in other areas such as the digestive tract. PXE may cause the following symptoms: growth of yellowish bumps on the skin of the neck, under the arms, or in the groin area; reduced vision; periodic weakness in the legs (claudication); or bleeding in the gastrointestinal tract, particularly the stomach. A clinical diagnosis of PXE can be made when an individual is found to have both the characteristic eye findings and yellow bumps on the skin. ABCC6 is the only gene known to be associated with this condition. Currently, there is no treatment for this condition, but affected individuals may benefit from routine visits to an eye doctor who specializes in retinal disorders, and by having regular physical examinationswith their primary physician. GARD:0009643 MONDO:0100091 Pathophysiology: In PXE, there is mineralization (accumulation of calcium and other minerals) and fragmentation of the elastin-containing fibers in connective tissue, but primarily in the midlaminar layer of the dermis, Bruch's membrane and the midsized arteries.[12] Recent studies hypothesize that PXE is a metabolic disease, and that its features arise because metabolites of vitamin K cannot reach peripheral tissues https://rarediseases.info.nih.gov/diseases/9643/pseudoxanthoma-elasticum inherited Gronblad Strandberg syndrome inherited PXE