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.
The blisters caused by HFM are red with a small bubble of fluid on top. They often peel, leaving an ulcer, which is a sore with a reddish base. The soles of the feet and the palms of the hands may have a rash that can look like flat red spots or red blisters. Occasionally, a pink rash may be seen on other parts of the body, such as the buttocks and thighs. However, some kids will have no problems other than sores in the back of the throat.