Cocaine overdose is a serious risk in Australia, potentially leading to severe side effects or death. This article discusses the signs of overdose, associated risks, and emergency response actions.

Addiction is a long-term disorder marked by compulsive substance use or behaviour despite its harmful consequences. The addiction meaning in Psychology is defined as a brain disorder that disrupts reward processing, motivation, and impulse control, leading to dependency. Common addictions involve substance use disorders such as alcohol, nicotine, and opioids, as well as behavioural addictions like gambling, gaming, and compulsive shopping.
An addiction is identified by compulsive engagement in a substance or activity that disrupts daily life and persists despite adverse effects. Biological factors, including genetics, brain chemistry, and excessive dopamine production, contribute to addiction, increasing susceptibility in some patients. Environmental factors such as trauma, social influences, and chronic stress play a key role in the development of addictive behaviours.
Addiction symptoms include intense cravings, loss of self-control, withdrawal effects, and neglect of personal or professional responsibilities, leading to severe mental and physical health complications. The consequences range from financial instability and damaged relationships to long-term cognitive and emotional challenges. Treatment involves a combination of medication, behavioural therapy, and support groups to help patients manage cravings and prevent relapse. Recovery approaches focus on lifestyle adjustments, professional counselling, and strong social support to restore balance and improve well-being. The social and behavioural consequences of addiction include legal issues, job loss, and strained personal connections, necessitating long-term intervention and rehabilitation.
Addiction is a persistent disorder that drives compulsive involvement with substances or behaviours despite detrimental consequences. Addiction alters brain chemistry, impacting reward processing, motivation, and self-regulation, leading to repeated engagement even when it negatively affects health, relationships, and daily functioning.
A patient is considered addicted when physical or psychological dependence develops on substances like drugs, alcohol, or nicotine, or on behaviours such as gambling, gaming, or excessive eating. Key indicators include intense cravings, impaired control, increased tolerance, withdrawal symptoms, and continued use despite awareness of its harmful effects.
Addiction is classified in Psychology as a neuropsychological disorder in which patients persist in habitual substance use or compulsive behaviours, even when it compromises their mental, emotional, or social well-being. It is linked to the brain’s dopamine reward system, impulse regulation, and emotional processing dysfunction. Psychological theories explain addiction as a behaviour reinforced by conditioning, cognitive distortions, and maladaptive coping mechanisms, making it a multifaceted disorder influenced by genetic predisposition and environmental factors.
Addiction works by altering the brain’s reward system, driving compulsive substance use or repetitive behaviours despite harmful consequences. Addiction emerges when continuous exposure to a substance or activity floods the brain with excessive dopamine, reinforcing cravings and pleasure-driven habits.
The brain compensates by decreasing dopamine production and receptor availability in time, leading to tolerance and dependence, where more substantial doses or repeated engagement are needed for the same effect. Biological, psychological, genetic, and environmental factors, along with underlying mental health conditions, increase susceptibility to addiction.
Addiction disrupts cognitive functions psychologically, impairing judgment, impulse control, and emotional stability, making it difficult to quit even when aware of its harm. It becomes a chronic, relapsing condition that requires a comprehensive approach, including medical treatment, behavioural therapy, and psychological support, for effective recovery due to these changes.
Yes, addiction is classified as a disorder. Addictive disorders are recognized as chronic, relapsing conditions that involve compulsive substance use or engagement in specific behaviours despite harmful consequences. Addiction is a brain disorder that alters neural circuits related to reward, stress, and self-control according to the American Society of Addiction Medicine (ASAM) and the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). These changes persist long after drug use stops, making addiction comparable to other chronic diseases like heart disease or diabetes. The classification of addiction as a disorder or a mental illness emphasizes the need for medical intervention, structured treatment, and long-term management strategies to support recovery.
The Different Types of Addiction are listed below.
The difference between substance addiction and behavioural addiction lies in their triggers and effects on the brain. Substance addiction involves the compulsive use of drugs or alcohol, leading to physical and psychological reliance due to chemical changes in the brain. Drug addiction creates a physical need for the substance, resulting in withdrawal symptoms when use is ceased.Â
Behavioural addiction, or process addiction, does not involve substance use but instead centres on compulsive participation in activities like gambling, gaming, shopping, or excessive social media engagement. These behaviours stimulate the brain’s reward system in much the same way as addictive substances, reinforcing dependency despite adverse consequences. Behavioural addiction is primarily treated through cognitive therapies aimed at managing compulsive urges while substance addiction necessitates medical detox. Behavioural and Substance or drug addiction severely impact daily life and overall well-being, although their treatments differ.
Examples of Behavioural Addictions are listed below.
The Examples of Drug Addiction are listed below.
Addiction is caused by a combination of biological, psychological, and environmental factors. Genetics plays a significant role, with research suggesting that hereditary factors contribute to nearly 40 to 60% of a patient’s risk for developing addiction. Patients with a family history of substance use disorders are more likely to create similar patterns due to inherited genetic predispositions. Biological influences such as age, sex, and pre-existing mental health conditions further contribute to vulnerability, as specific patients process substances differently or are more prone to dependency due to neurological differences.
Psychological factors play a crucial role in addiction. Mental health disorders, including depression, anxiety, and post-traumatic stress disorder (PTSD), increase the likelihood of substance misuse. Patients use drugs or alcohol as a means of self-medicating to escape emotional pain or manage stress. Trauma, particularly childhood abuse or neglect, has been linked to increased addiction risk, as adverse experiences alter brain chemistry and emotional regulation. The brain’s reward system becomes dysregulated through repeated substance use, leading to dependence as patients attempt to restore normal dopamine levels. The cycle reinforces compulsive behaviours gradually and makes it increasingly difficult to stop using.
Environmental factors influence addiction risk, particularly during adolescence. Social surroundings, peer pressure, and early exposure to substance use normalize addictive behaviours and encourage experimentation. Family dynamics shape addiction vulnerability; growing up in an environment with substance abuse, neglect, or instability increases the likelihood of developing dependency. High-stress situations, such as financial struggles, work pressure, or a lack of social support, further drive patients toward substance use as a coping mechanism.
The type of substance used influences the speed at which a person becomes dependent. Drugs such as opioids and methamphetamines are more addictive and cause rapid brain changes, leading to faster dependency. These factors make addiction complex. No single cause determines addiction, but rather, an interplay of genetics, mental health, trauma, social influences, and accessibility to substances contributes to the development and progression of the disorder.
Yes, dopamine influences addiction. Dopamine is a neurotransmitter responsible for motivation, learning, and reinforcement of behaviours. Its primary function is reinforcing behaviours that trigger pleasurable sensations, prompting patients to seek the similar experiences again, while it is commonly mistaken as the “pleasure chemical.” Substances and certain behaviours cause a surge in dopamine levels, overstimulating the brain’s reward system and reinforcing repeated use.
Scientific research, including brain imaging studies, has shown that repeated drug use alters dopamine pathways. Studies using PET scans have demonstrated that patients with substance use disorder have reduced dopamine receptors, leading to diminished responses to natural rewards and an increased need for substances to feel pleasure. Long-term overstimulation forces the brain to adapt by decreasing dopamine production and receptor availability, contributing to tolerance and dependence.
Research published in The Journal of Neuroscience highlights that chronic drug exposure like dopamine addiction causes structural changes in the brain’s prefrontal cortex, impairing decision-making and impulse control, which further perpetuates addiction. Dopamine plays a crucial role in the cycle of addiction, although it is not the only cause, it reinforces drug-seeking behaviour and contributes to tolerance.
Yes, genetics plays a significant role in addiction. Scientific research indicates that genetic factors contribute to 40 to 60% of a person’s vulnerability to substance use disorder. Variations in specific genes influence how a patient responds to a substance, their likelihood of developing a dependency, and the severity of withdrawal symptoms they experience. For example, the ALDH2*2 gene variant affects how alcohol is metabolized, causing unpleasant reactions like nausea and facial flushing, which serve as a protective factor against alcohol addiction.
Variations in the DRD2 gene, which influences dopamine receptors, are more common in patients addicted to alcohol, cocaine, and opioids, suggesting that genetic predisposition affects the brain’s reward system and susceptibility to addiction.
Family studies support the genetic link to addiction. Research involving twins and adopted children demonstrates that patients with a family history of substance use disorder are at a higher risk, even when raised in different environments.
Genetically modified mice with increased expression of the Mpdz gene exhibit less severe withdrawal symptoms from alcohol and sedative-hypnotic drugs, highlighting how genetics influence addiction risk and withdrawal experiences. Multiple genetic variations interact with environmental factors to shape a person’s likelihood of developing substance use disorder, although no single “addiction gene” exists. Understanding these genetic influences leads to more targeted treatments, including gene therapies that modify addiction-related proteins and precision medicine approaches that tailor treatments based on a patient’s genetic profile.
The Signs and Symptoms of Addiction are listed below.
Substance addiction and behavioural addiction manifest differently in their physical effects, but they share many psychological and behavioural similarities. Substance addiction involves chemical dependency, leading to withdrawal symptoms when the drug is removed, such as nausea, tremors, or seizures. Behavioural addiction, such as gambling or compulsive shopping, does not cause the same physical withdrawal but leads to intense psychological distress, including anxiety, depression, and irritability. The brain’s reward system is hijacked in both cases, making it difficult to stop the behaviour despite adverse consequences. Recognizing these differences is essential for developing targeted treatment strategies tailored to each type of addiction.
Addiction feels like an endless cycle of chasing a “dopamine hit” that never truly satisfies, leaving behind a growing sense of emptiness and loss of control. Dopamine is a neurotransmitter that plays a key role in the brain’s reward system, reinforcing behaviours that bring enjoyment or relief.
Addiction creates an internal battle, where the mind is fully aware of the damage being done, yet the craving overrides logic and reason. It feels like being trapped in a loop of craving, temporary relief, and regret psychologically. It hijacks the brain’s reward system, making substances or behaviours seem the only source of comfort while everything else loses meaning. Addiction manifests physically in withdrawal symptoms such as nausea, anxiety, tremors, and extreme discomfort when the substance or behaviour is absent.
The body adapts, developing tolerance, which means more significant amounts are needed to achieve the same effect, leading to an endless pursuit of that initial high. It feels like drowning, where the substance seems to offer oxygen but instead pulls deeper into the abyss. Addiction erodes identity, relationships, and purpose bit by bit, escaping seems impossible, even when the damage is undeniable.
Addiction affects the brain function by taking control of its natural reward system, leading to compulsive substance use despite negative consequences. The brain’s pleasure and reward circuits, primarily driven by dopamine, are designed to reinforce essential behaviours such as eating and social interaction. Addictive substances flood the brain with excessive dopamine, creating an artificially intense sense of pleasure. It disrupts normal neurotransmission over time, making it increasingly difficult for the brain to experience pleasure from natural rewards.
A healthy brain regulates impulse control, assess risk, and maintain emotional stability, while an addicted brain undergoes structural and functional changes that weaken these abilities. The prefrontal cortex, responsible for decision-making and self-control, becomes impaired, reducing a person’s ability to resist cravings even when faced with severe consequences. Addiction overactivates the brain’s stress and anxiety circuits, causing withdrawal symptoms when the substance is not present.
Long-term effects on the brain include reduced cognitive function, memory impairment, emotional instability, and an increased risk of mental health disorders such as anxiety and depression. These changes make addiction a chronic condition that requires medical intervention and long-term management to restore brain function and prevent relapse.
Yes, a rehabilitation programme is essential for overcoming addiction. Rehabilitation provides structured treatment that addresses the physical and psychological aspects of substance use disorders. Addiction alters brain chemistry, making it difficult to stop using substances without medical supervision, therapy, and long-term support.
Rehabilitation programmes offer a combination of behavioural therapies, medication-assisted treatment, and counselling to help patients manage withdrawal symptoms, develop coping strategies, and prevent relapse. Effective treatment must address the whole person, including medical, mental, social, occupational, and legal needs according to the National Institute on Drug Abuse (NIDA).
Relapse rates for substance use disorders are comparable to relapse rates for chronic illnesses like hypertension and asthma, emphasizing the need for continuous care and treatment adjustments. An effective rehab programme provides access to peer support, lifestyle changes, and long-term recovery planning, which are crucial for sustained sobriety. The risk of relapse remains high without professional intervention, making rehabilitation a critical component of addiction recovery.
The Long-Term Effects of Addiction are listed below.
Addiction has a profound impact on mental health, leading to emotional instability, cognitive impairment, and increased vulnerability to mental disorders. Substance use alters brain chemistry, disrupting the balance of neurotransmitters responsible for regulating mood, motivation, and stress response. Difficulty managing daily emotions results in anxiety, depression, and mood swings.
Patients struggling with addiction experience feelings of guilt, shame, and hopelessness, which further exacerbate mental health challenges. Prolonged substance use contributes to paranoia, hallucinations, and cognitive decline, particularly with substances that affect memory and perception. Addiction is strongly linked to an increased risk of suicidal thoughts and self-harming behaviours, as patients turn to substances to numb emotional pain.
Addiction’s cycle and mental health deterioration reinforce each other, as substance use initially provides temporary relief but ultimately worsens emotional distress. Addiction leads to long-term psychiatric disorders without proper treatment, further diminishing a patient’s quality of life and ability to function. Addressing addiction via integrated mental health and addiction treatment programmes is essential for recovery and long-term well-being.
Addiction harms relationships and families by eroding trust, creating emotional distance, and leading to financial and psychological strain. Substance use takes priority over responsibilities, causing patients to neglect family obligations, break commitments, and engage in secrecy or dishonesty.
The compulsive nature of addiction fuels conflict, leading to frequent arguments, emotional distress, and feelings of betrayal among loved ones. Financial instability arises as money meant for essential needs is redirected toward sustaining substance use. Children in households affected by addiction experience neglect, emotional trauma, or unstable environments, increasing their risk of future behavioural and psychological issues.
The cycle of addiction perpetuates codependency, where family members enable destructive behaviours in an attempt to maintain stability. Accumulating broken promises over time, strained communication, and unresolved emotional wounds make rebuilding relationships difficult. Professional intervention, therapy, and support groups help restore family dynamics by addressing underlying issues, fostering healing, and establishing healthier interactions.
Addiction affects daily life and work by impairing responsibilities, relationships, and overall well-being. It rewires brain function, creating compulsive substance use or behavioural patterns that overshadow essential tasks and priorities. Patients affected neglect personal care, social commitments, and financial obligations, leading to instability in multiple aspects of life. Workplace performance suffers due to frequent absences, diminished concentration, and poor decision-making, increasing the risk of job termination or disciplinary action.
Family relationships become strained as trust erodes through secrecy, financial struggles, and emotional detachment. Addiction heightens the risk of accidents, legal troubles, and serious health complications, further disrupting daily routines. Long-term consequences include limited career advancement, social isolation, and deteriorating mental and physical health. Structured treatment programmes, therapy, and professional support offer addicts a path to recovery despite these challenges, helping them rebuild stability, mend relationships, and regain productivity in both personal and professional spheres.
Yes, addiction can be treated. Effective treatment for addiction options include medical detoxification, behavioural therapy, medication-assisted treatment, rehabilitation programmes, and support groups. Detoxification helps manage withdrawal symptoms under medical supervision, while treatment, such as cognitive behavioural therapy (CBT) and motivational interviewing, addresses underlying psychological and behavioural factors. Medication-assisted treatment (MAT) reduces cravings and withdrawal symptoms, supporting long-term recovery.
Rehabilitation programmes provide structured care and support, including inpatient and outpatient options. Support groups like Alcoholics Anonymous (AA) and Narcotics Anonymous (NA) offer peer encouragement and accountability. Addiction treatment presents challenges, including relapse risk, co-occurring mental health disorders, and the need for long-term commitment. Recovery requires ongoing care, lifestyle adjustments, and a strong support system to maintain sobriety and prevent relapse. Patients successfully manage addiction and regain control of their lives, with comprehensive treatment and continued support.
To Overcome Addiction, follow the eight steps listed below.
The Different Treatments for Addiction are listed below.
The Most Effective Ways to Stop an Addiction are listed below.
Yes, substance abuse can lead to domestic violence, as drugs and alcohol impair judgment, lower inhibitions, and increase aggression. The connection between addiction and domestic violence is well-documented, with nearly 80% of domestic violence crimes involving drug or alcohol use.
Alcohol drinkers or drug users are more likely to engage in irrational, violent, or controlling behaviours when under the influence, leading to abusive patterns in relationships. The desire for power and control, already a core component of domestic violence, becomes even more dangerous when substances interfere with impulse control and emotional regulation. Victims of domestic abuse face a higher risk of substance abuse as they turn to drugs or alcohol as a coping mechanism, creating a dangerous cycle of addiction and violence.
Statistics show that women who have experienced abuse are 15 times more likely to develop alcohol dependency and 9 times more likely to use drugs. Preventing substance-induced domestic violence requires a multi-faceted approach, including early intervention for substance abuse, access to domestic violence support services, and education on anger management and healthy relationship dynamics.
Treatment programmes that address both addiction and abusive behaviour through counselling, behavioural therapy, and anger management training help break the cycle. Seeking safety and professional support is crucial to breaking free from the abusive relationship and any resulting substance dependency for victims. Addressing substance abuse as part of domestic violence prevention is essential in reducing harm, protecting victims, and promoting healthier relationships.
Yes, people can become addicted to almost anything that triggers the brain’s reward system and reinforces compulsive behaviour. Behavioural addictions are just as powerful as substances like nicotine, alcohol, and drugs. Gambling, social media use, shopping, video games, and even exercise become addictive when they start interfering with daily life, relationships, and mental well-being. The brain’s reaction to particular stimuli is essential to addiction. The brain begins to want, reward, and reinforce an activity or substance when it consistently releases dopamine in response to it.
The brain adapts in the long run, requiring more of the substance or behaviour to achieve the same level of satisfaction, leading to dependence. Genetic predisposition, mental health issues, trauma, and environmental factors elevate the risk of addiction in patients who engage in certain activities. Note that not everyone who partakes in these activities develops an addiction. Addictions feel overwhelming and challenging to stop without intervention, unlike habits, which are choices people are able to control. Recovery is possible, but it usually requires a combination of therapy, support systems, and lifestyle changes to break the cycle and regain control.
Yes, nicotine is addictive. Nicotine stimulates dopamine release in the brain, creating feelings of pleasure and reinforcing repeated use. The brain adapts to nicotine over time, leading to dependence and withdrawal symptoms when use is reduced or stopped. Research shows that nicotine addiction is as difficult to overcome as heroin or cocaine addiction, making quitting challenging without proper support, such as behavioural therapy, nicotine replacement therapy (NRT), or medications like varenicline or bupropion.