DESPITE THE IMPORTANCE OF NUMEROUS PSYCHOSOCIAL FACTORS, AT ITS CORE, DRUG ADDICTION INVOLVES A BIOLOGICAL PROCESS: the ability of repeated exposure to a drug of abuse to induce changes in a vulnerable brain that drive the compulsive seeking and taking of drugs, and loss of control over drug use, that define a state of addiction. Here, we review the types of molecular and cellular adaptations t...

Drug addiction is a complex neuropsychiatric disorder that affects a subset of the individuals who take drugs. It is characterized by maladaptive drug-seeking habits that are maintained despite adverse consequences and intense drug craving. The pathophysiology and etiology of addiction is only partially understood despite extensive research because of the gap between current preclinical models ...

Physical-dependence-based theories of addiction regard compulsive drug taking as the behavioral manifestation of a desperate need to relieve aversive autonomic withdrawal symptoms. In the present article, the withdrawal-relief paradigm, or opiate model of addiction, is critically examined in the light of recent experimental and clinical evidence for various addictive drugs. It is concluded that...

The present study, involving 132 narcotic addicts with multiple periods of addiction, examines trends in criminal activity and drug use over successive periods of addiction and successive periods of nonaddiction during an average 15-year addiction career. Significant decreases over successive addiction periods were found for four (of five) categories of crime: theft, violence, drug distribution...

Prescription drug abuse has reached epidemic proportions in the United States and West Virginia is not immune. It is estimated that in 2009, the number of adolescents and adults with a substance abuse and/or dependence problem has reached 23.2 million in the US. There has been an alarming rate of increased sales of methadone, hydrocodone and oxycodone. This article addresses the scope of the pr...

Addiction to alcohol, tobacco, and illegal drugs represents a substantial burden to societies worldwide. In terms of health-related outcomes, addiction results in enormous direct medical costs, premature mortality (tobacco alone may be responsible for 450,000 deaths yearly in the United States), and disability. In terms of broader social costs, addiction results in crime, negative impacts on fa...

Addiction is a state of compulsive drug use; despite treatment and other attempts to control drug taking, addiction tends to persist. Clinical and laboratory observations have converged on the hypothesis that addiction represents the pathological usurpation of neural processes that normally serve reward-related learning. The major substrates of persistent compulsive drug use are hypothesized to...

Drug addiction is spreading alarmingly and rapidly, particularly among our youth today. The global situation of drug abuse is far from encouraging, with heroin being the main drug of abuse in Southeast Asia and Europe. The problem is becoming increasingly serious in Malaysia because of the country's proximity to drug producing areas, called the "Golden Triangle" which comprises the borders of T...