In a large skillet melt 2 tablespoons butter over medium-low heat. Add the onions. Cook, covered, for 13 to 15 minutes or until the onions are tender, stirring occasionally. Uncover the skillet and cook and stir over medium-high heat for 3 to 5 minutes more or until onions are golden.
Tetanus (or lockjaw) is a serious infection caused by Clostridium tetani bacteria which produce a toxin that affects the brain and nervous system. The toxin leads to stiffness in the jaw muscles as well as other muscles.
Muscle cramps which are caused by the disease tetanus are not classified as tetany; rather, they are due to a lack of inhibition to the neurons that supply muscles.