What is Addiction Prolonged use of any addictive drug can lead to addiction, which is described as a chronic (continuing) brain disease. Powerful drugs and other substances that have the ability to lead to addiction cause serious changes in the brain when they're abused for a prolonged period of...

Methamphetamines, often referred to as meth, speed, crack, chalk, ice, crystal or glass, is a dangerous addictive stimulant that has long-lasting effects and is highly toxic to the dopamine nerves in the central nervous system. In some areas of the United States, the use of methamphetamines is...