Sheldon-area historical tornado activity is below South Carolina state average. It is 32% smaller than the overall U.S. average. On 4/9/1998, a category F3 (max. wind speeds 158-206 mph) tornado 40.7 miles away from the Sheldon place center killed 2 people and injured 17 people and caused $3 million in damages.
Similar results have been found in other studies [17] [18]. Based on these reports we have defined hard-to-heal ulcers in this study as venous leg ulcers with an initial area of 10cm2 or greater and a duration of six months or more.
Leg cramps are painful and incapacitating, lasting an average of nine minutes per episode. The acute episode may be followed by hours of recurrent episodes and residual pain. Leg cramps are usually nocturnal and are associated with secondary insomnia.