Leg pain is also frequently a sign of injury, such as the following: Muscle strain is a common injury that happens when the muscle fibers tear as a result of overstretching. It often occurs in the larger muscles, such as the hamstrings, calves, or quadriceps.
medical Definition of superinfection : a second infection superimposed on an earlier one especially by a different microbial agent of exogenous or endogenous origin that is resistant to the treatment used against the first infection
super-. 1  above, over, or upon. 2  superior in size, quality, number, degree, status, title, or position. 3  inclusive. ( 4 physics) supersymmetry. ( 5 fiction) superhero.