Summary: Despite years of research, drug addiction mechanisms are not fully understood yet. There are theories of positive reinforcement caused by euphoria or negative reinforcement caused by withdrawal syndrome and pain. Additionally, researchers know well about the involvement of the dopamine reward pathway. However, now new studies show that for drug addicts, even drug-seeking behavior itself is quite rewarding. With time it becomes deeply engraved in them, and they receive immense pleasure by seeking the drug, and sometimes this pleasure may play a greater role in drug addiction than substance abuse itself.
Despite decades of research, understanding the mechanism of drug addiction or substance use disorder (SUD) remains elusive. In addition, science is still struggling to understand why some can use substances in a controlled manner while others cannot.
Understanding the underlying mechanism of SUD is essential for finding an effective treatment strategy. However, it seems that SUD is quite a complex phenomenon with numerous overlapping mechanisms.
For example, addiction is well known to be a mix of psychological and physical dependence. Thus, some may seek drugs as they like the pleasure provided by them. On the other hand, others may go through physical pain on drug withdrawal.
Similarly, researchers have identified multiple neurobiological changes causing SUD. Thus, the dopamine-dependent reward pathway in drug abuse is well-known. Likewise, in recent years, the role of the endocannabinoid system has received increasing attention in drug-seeking behavior1. Online Drug Addiction Treatment offers effective ways to address these complex dependencies, providing individuals with accessible support and tailored treatment to aid in their recovery journey.
Perhaps the most established theories behind SUD are positive and negative reinforcement theories. Positive reinforcement means that a person gets euphoria on drug use and wants to repeat the experience2.
On the other hand, negative reinforcement means that drug withdrawal causes pain, and thus a person living with SUD seeks drugs to relieve pain2.
Why does seeking the drug become its own reward?
This new study had quite a different approach. Researchers think that science has been focusing too much on the impact of drugs on the brain. However, researchers have overlooked that people with SUD spend considerable time searching for drugs, which leads to compulsive behavior and reinforcement of drug-seeking behavior.
Simply said, people living with SUD are not just addicted to the substance. For them, seeking drugs itself is a kind of habit. If they are deprived of this habit, it causes distress in them. It means that drug-seeking behavior in itself becomes a satisfying activity.
Therefore, if a person is stopped from seeking drugs, for example by confining an individual, it results in a so-called “negative urgency.” There is a formation of so-called incentive habits. Finding a drug itself is a massive incentive for a drug seeker, not just using the drug.
SUD is now viewed as a psychiatric disorder, and this new study only reinforces that concept. Moreover, it shows how drug-seeking habits become deeply ingrained in individuals living with SUD.
Researchers say that there has been a considerable focus on negative reinforcement when the absence of drugs causes significant pain, anxiety, and mood disorders. However, this study adds an entirely new dimension to the understanding of SUD, as it shows that the inability to find a drug also results in negative emotional urgency.
The inability to execute their habit itself causes significant distress for drug seekers. This study was done on animal models. And the research was published in Biological Psychiatry3.
To conclude, SUD is quite a complex disorder. Positive and negative reinforcement play a significant role in drug addiction. However, those treating substance use disorder also need to remember that the drug-seeking habit itself is quite a satisfying activity in many cases. Hence, therapeutic approaches to addiction treatment would need to consider these new findings.
Frequently asked questions
What is drug-seeking behavior?
Drug-seeking behavior is the time and effort a person with substance use disorder (SUD) spends hunting for a drug. Animal research published in Biological Psychiatry shows the search itself becomes a rewarding habit that grows more deeply ingrained over time. For some people, the pleasure of seeking plays a bigger role in the addiction than using the substance.
What are addictive behaviors?
Addictive behavior runs on three engines. Positive reinforcement: the drug brings euphoria, and the person wants to repeat it. Negative reinforcement: withdrawal brings pain, so the person uses to relieve it. Incentive habits: the act of finding the drug becomes a reward of its own. The dopamine reward pathway and the endocannabinoid system both play a part in these drives.
What are some drug-seeking behaviors?
The core behavior is compulsive searching. People with SUD spend considerable time looking for drugs, and that search hardens into a habit. When the habit is blocked, for example when a person is confined, the result is a “negative urgency”: real distress from being unable to carry out the habit, on top of the pain, anxiety and mood problems that withdrawal already brings.