Answer to your Question
Question: My son has a bruise and knot on his arm he says it doesnt hurt he was injecting xanax. What is it?
Submitted on: December 22, 2008
Answered By: 
Addiction Specialist
Addiction SpecialistAnswer: Injection of any drug can result in an abscess due to the introduction of bacteria into the skin. It is important for someone with an abscess to seek medical attention in order to prevent more serious problems from developing. 
Answered on: January 26, 2009
