A defensive maneuver in which one or more linebackers or defensive backs, who normally remain behind the line of scrimmage, instead charge into the opponent's backfield. However, in the 3-4 defense, one linebacker typically rushes the passer with the three down linemen.
Blisters are commonly caused by friction from tight shoes, herpes, chicken pox, poison ivy and allergic reactions. More uncommon are disorders that only cause blisters on the hands and feet. See your doctor for an accurate diagnosis if you have blisters on your hands and feet, particularly from an unknown cause.
What causes cold hands syndrome? There are two major vascular disease processes that cause cold hands syndrome: vasoconstriction and vaso-occlusion. Vasoconstriction, which means narrowing in one or more blood vessels of the hand or wrist, is essentially part of a normal regulation process.