What is Radon? Radon is a gas that you cannot smell, taste or see. Radon forms naturally when uranium, thorium, or radium, radioactive metals, breaks down in rocks, soil and groundwater. People can be exposed to radon primarily from breathing radon in air that comes through cracks and gaps in buildings and homes.
The term 'prevalence' of Ehlers-Danlos syndrome usually refers to the estimated population of people who are managing Ehlers-Danlos syndrome at any given time. The term 'incidence' of Ehlers-Danlos syndrome refers to the annual diagnosis rate, or the number of new cases of Ehlers-Danlos syndrome diagnosed each year.
Ehlers-Danlos Syndrome. Ehlers-Danlos syndrome is a group of genetic connective tissue disorders characterized by unstable, hypermobile joints, loose, âstretchyâ skin, and fragile tissues.t is characterized by loose joints and chronic (long-term) joint pain. Other forms of Ehlers-Danlos syndrome can involve serious and potentially life-threatening complications. These include: 1  Vascular Ehlers-Danlos syndrome, which can cause blood vessels to tear (rupture) unpredictably.