Certain procedures, particularly those involving the skin, can cause pain and distress in patients. Often , a local anesthetic is used to dull the sensation and improve patient experience and satisfaction. The procedure at hand dictates the mode of delivery of the anesthetic, but typically immediate and fast acting analgesia requires infiltration. Lidocaine is in the amide class of local anesthetics and is the most commonly used agent for infiltration. Lidocaine is usually given as a 1 percent solution and can be combined with epinephrine in order to prolong the duration of action, decrease local bleeding via local vasoconstriction and decrease systemic absorption of the lidocaine.