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Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption ...
Additionally, individuals who chronically use substances as a form of self-medication for PTSD symptoms strengthen an automatic mental link between PTSD symptoms and the substance use itself via conditioning. [13] Stress is also a component of PTSD that may lead to drug use, due to the norepinephrine that is released from the stress response of ...
The latter reflects physical dependence in which the body adapts to the drug, requiring more of it to achieve a certain effect (tolerance) [25] and eliciting drug-specific physical or mental symptoms if drug use is abruptly ceased (withdrawal). Physical dependence can happen with the chronic use of many drugs—including even appropriate ...
Substance use disorder (SUD) is the persistent use of drugs despite substantial harm and adverse consequences to self and others. [8] Related terms include substance use problems [9] and problematic drug or alcohol use. [10] [11] Substance use disorders vary with regard to the average age of onset. [12]
It's important to understand why teens use or misuse drugs, so the right resources and education can help them, Dr. Nora Volkow, director of the National Institute on Drug Abuse, wrote in an email.
Drug addiction, which belongs to the class of substance-related disorders, is a chronic and relapsing brain disorder that features drug seeking and drug abuse, despite their harmful effects. [31] This form of addiction changes brain circuitry such that the brain's reward system is compromised, [ 32 ] causing functional consequences for stress ...
addiction – a biopsychosocial disorder characterized by persistent use of drugs (including alcohol) despite substantial harm and adverse consequences addictive drug – psychoactive substances that with repeated use are associated with significantly higher rates of substance use disorders, due in large part to the drug's effect on brain ...
addiction – a biopsychosocial disorder characterized by persistent use of drugs (including alcohol) despite substantial harm and adverse consequences addictive drug – psychoactive substances that with repeated use are associated with significantly higher rates of substance use disorders, due in large part to the drug's effect on brain ...