Among teen drivers, those at especially high risk for motor vehicle crashes are: Males: In 2014, the motor vehicle death rate for male drivers and passengers ages 16 to 19 was two times that of their female counterparts. 1
1 Excess fluid that accumulates in the abdominal cavity is called ascites. 2  Edema of unknown cause occurs primarily in women. 3  Varicose veins or thrombophlebitis (a blood clot in an inflamed vein) of the deep veins in the legs causes edema that is localized to the legs.
In these diseases, edema occurs primarily because of the body's retention of too much salt (sodium chloride). The excess salt causes the body to retain water, which then leaks into the interstitial tissue spaces, where it appears as edema. Medications also can cause pitting edema. The most common local conditions that cause edema are varicose veins and thrombophlebitis (inflammation of the veins) of the deep veins of the legs.