Understanding how learning and behavior work in the reward circuit can help understand the action of addictive drugs. Drug addiction is characterized by strong, drug seeking behaviors in which the addict persistently craves and seeks out drugs, despite the knowledge of harmful consequences. Drug addiction is a pathological condition. The disorder of addiction involves the progression of acute drug use to the development of drug-seeking behavior, the vulnerability to relapse, and the decreased, slowed ability to respond to naturally rewarding stimuli. On what I have learned, drug addiction is a dependence on a street drug or a medication. When you're addicted, you may not be able to control your drug use and you may continue using the drug despite the harm it causes. Drug addiction can cause an intense craving for the drug. You may want to quit, but most people find they can't do it on their own. Not everyone who uses drugs becomes addicted, but for many what starts as casual use leads to drug addiction. Drug addiction can cause serious, long-term consequences including problems with physical and mental health, relationships, employment and the law. For those who do not engage themselves with drug addiction, we should do something in order for us to avoid ourselves from engaging drug addiction as well as those alcohols that have bad effects on our body. One of the best ways to prevent an addiction to an illegal drug is not to take the drug at all. At a young age children must be guided by their parents in everything they do, a strong, stable bond between you and your child will reduce your child's risk of using or abusing drugs. Parents should also be good examples simply just don’t abuse alcohol or addictive drugs. Children of parents who abuse drugs are at greater risk of drug addiction.