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.
Another cause of non-pitting edema of the legs is called pretibial myxedema, which is a swelling over the shin that occurs in some patients with hypothyroidism. Non-pitting edema of the legs is difficult to treat.