INTRODUCTION:

Drug addiction is characterized as a chronic, recurrent illness brought on by the long-term effects of substances on the brain. Drug addiction is entangled with behavioral and social elements that are equally significant components of the illness, much like other neuropsychiatric disorders, making the whole therapeutic approach more difficult. According to the National Institute on Drug Abuse (2014), obsessive drug seeking and use despite negative consequences is a hallmark of drug addiction, a chronic, relapsing brain disease. Numerous facets of physical, psychological, and socio-occupational functioning are impacted by drug addiction. In India and around the world, drug addiction is becoming a bigger issue. Millions of fatalities and HIV cases worldwide are caused by the addiction and drug usage problem^3-4.Substance addiction, sometimes known as drug addiction, is a neuro-psychiatric illness marked by a persistent desire to use drugs constantly in spite of their negative effects. Drugs are not a factor in behavioral addiction, also known as nonsubstance addiction. However, it encompasses comparable behaviors as drug use, including food addiction, internet addiction, gaming, sex addiction, mobile phone addiction, and pathological gambling. The term "substance use disorder" is favored over "addiction," which has been removed from the scientific literature due to its negative connotation. Any chemical (psychoactive) substance that has an impact on one's physical, mental⁴.

When you require one or more medicines to function, you develop drug dependence. In the past, the American Psychiatric Association (APA) made a distinction between abuse and dependence. The mild or early stages of inappropriate drug usage that resulted in dependence were seen as abuse. Dependency was seen as a more serious issue than abuse. Drug dependence may not necessarily equate to addiction. The body's reaction to a chemical might result in dependence. This frequently happens if you depend on medicine to manage a long-term health issue. These circumstances could consist of: hypertension, diabetes, glaucoma. Typical use patterns Drug dependence patterns vary with age. Compared to women, men are more frequently involved. As drugs gain and lose popularity, patterns shift. It displays the overall situation in the UK. Although there are several sources of data on illicit drug use in the UK, the yearly British Crime Survey offers the most recent data on prevalence and consumption trends. According to data from the 2008/2009 study, one in ten individuals aged 16 to 59 had used an illicit substance in the preceding year, and one in three had ever used illicit substances. Additionally, the poll enables tracking of illicit drug use patterns over time^4-5.

ETIOLOGY:

Addiction, alcoholism, and other drug use problems are caused by a complex interaction between neuro-biology, genetics, and the environment. One piece of data that supports the neurological foundations of addiction is reward activity.

Furthermore, parental usage, psychological or cognitive impairments, and stress levels are all significantly influenced by an individual's psychological, physical, and biochemical responses to stress. Preclinical studies have demonstrated that stress exposures, particularly during early life when there is frequent adversity and child abuse, increase drug self-administration and cause many relapses in addicts.

One of the main causes of drug use and abuse, especially among young people, is peer pressure. absence of family participation. Difficult family settings or lack of a link with your parents or siblings may raise the likelihood of addiction, as can a lack of parental control⁶.

HISTORY AND PHYSICAL EXAMINATION:

Depending on the type of addiction, substance used, period since ingestion, and route, different people with addictions have different histories and physical examinations. For instance, the majority of alcohol intoxication symptoms include ataxia, slurred speech, and poor judgment. This process can rapidly progress to multi organ failure, coma, and central nervous system depression, depending on the dosage and timing of consumption. Ethanol, methanol, iso- propanol, and ethylene glycol all follow this sequence⁷.

The etiology of the addiction determines the specific diagnostics, imaging, and lab values (blood and urine). The complete blood count (CBC) and comprehensive metabolic panel (CMP) readings, as well as the psychoanalytic and behavioral screening, may show evident abnormalities if it is a psychoactive substance^.8.

CLASSIFICATION:

Acute intoxication, hazardous use, dependent syndrome, and withdrawal state are the four patterns of substance use that are described by ICD-10, which groups substance use disorders under "Mental and behavioral disorders due to psychoactive substance use (F10–F19)". For many psychoactive substances, such as alcohol, opioids, cannabinoids, sedative hypnotics, cocaine, stimulants, hallucinogens, nicotine, volatile solvents, and poly drug usage, the codes in this range correspond to individual diagnostic codes⁹.

Substance Dependence and Substance Abuse were removed from the DSM-IV, Substance-Related Disorders classification and replaced with the new Substance-Use Disorders category. The most significant departure from the dependency and abuse diagnosis in the chapter on substance use disorders is the switch to mild, moderate, and severe. Criteria 1–11 have been developed to assess the disorder's severity. Mild symptoms are those that are present in two to three of the eleven. Moderate is the presence of four to five symptoms¹⁰.

TYPES OF DRUGS:

Drugs can be broadly classified into narcotics, depressants, stimulants and hallucinogens.

Depressants:

Drugs that slow down brain activity are called depressants, sometimes referred to as sedatives and tranquilizers. These consist of sedatives for relaxation, anti-convulsants such barbiturates, hypnotics to promote sleep, anxiolytics to lessen anxiety, and alcohol. The most widely used depressant is alcohol. Officially, only 21% of males and 2% of women in India drink alcohol, making them one of the world's lowest alcohol drinkers.

Barbiturates:

Barbiturates are sedatives or depressants, including amobarbital, pentobarbital, phenobarbital, and secobarbital. These medications have a number of therapeutic applications, such as reducing stress and anxiety, numbing pain, and managing hypertension and epilepsy. Psychiatrists, nurses, emergency medicine doctors, anesthesiologists, and family practitioners are the professions most at risk for prescription drug abuse.

Narcotics:

Narcotics, often known as opioids, are medications with a high potential for addiction that are prescribed for medical purposes to relieve pain. The main factor contributing to opioids' widespread use as illegal substances is the rush or strong emotions of pleasure they provide. They also make people less conscious of their own issues, which appeals to those looking for a stress-relieving mental vacation.

Stimulants:

Stimulants lower appetite and weariness while boosting energy and alertness through their effects on the central nervous system. These include MDMA (ecstasy), cocaine (like freebase and "crack"), amphetamines (like Dexedrine and Benzedrine), methamphetamine (like "speed," "crystal," "ice," and "crank"), nicotine, caffeine, and amphetamine-related drugs (like Ritalin or Preludin).

Amphetamines:

Alpha-methyl phenethylamine is the parent compound of amphetamine, a stimulant of the central nervous system (CNS). Because of their euphoric effect, amphetamines are used in large quantities. They are frequently consumed as pills or smoked as "ice" or "crystal meth," which are relatively pure forms.

Ecstasy:

MDMA (3,4-methylenedioxymethamphetamine), also known as ecstasy, is a designer drug that shares a molecular composition with amphetamine. It has gained particular popularity on college campuses, in clubs, and at "raves" in numerous cities. It causes mild euphoria and hallucinations (Hernandez, 2000; Strote and Wechsler, 2002).

Cocaine:

The leaves of the coca plant are used to make cocaine, a naturally occurring stimulant. Typically, cocaine is either smoked as crack or sniffed as powder. In 2008, 1.1 million Indians aged 12 and older reported abusing crack at least once in the year before the study, and 5.3 million reported abusing cocaine in any form. NIDA (2008).

Nicotine:

Cigarettes, smokeless tobacco, and cigarettes are among the tobacco products that contain nicotine. Smoking, chewing, sucking, and applying to the teeth and gums are all ways that tobacco is utilized. Both smoking (such as bidi, cigarettes, hookah, etc.) and smokeless tobacco (such as gutkha, khaini, and zarda) are widely available in India. According to WHO estimates, 1 billion people smoke globally, and smoking-related causes claim the lives of over 3 million people annually.

Hallucinogens:

Psychedelics, another name for hallucinogens, are a family of chemicals that cause hallucinations, which include significant changes in hearing and color perception. Other side effects of hallucinogens include pleasure, relaxation, and in rare instances, terror. Psilocybin, mescaline, and lysergic acid diethylamide (LSD) are examples of hallucinogens. PCP, LSD, and marijuana are the most widely used hallucinogens.

Marjiuana:

The Cannabis sativa plant is the source of marijuana. Because it might create moderate hallucinations or perceptual distortions, it is typically categorized as a hallucinogen. It is also referred to by a number of street names, including hashish, pot, charas, bhaang, gaanja, and marijuana. Cannabis use can result in derealization, anxiety, and paranoia. It is the most common unlawful.

Phencyclidine:

When phencyclidine's hallucinogenic side effects were identified, the drug's use as an anesthetic was halted in the 1950s. Using this drug results in numbness, flushing, sweating, and hallucinations. It also raises blood pressure and pulse rate. PCP is categorized as a deliriant, which is a medication that can induce delirium. Additionally, it produces dissociating effects, making users believe that an invisible barrier separates them from their surroundings¹¹.

EVALUATION:

The Addiction Severity Index (ASI) is a frequently used assessment for addiction screening. Seven domains are assessed by the screening:

1. Health status

2. Employment

3. Assistance

4. Use of drugs and alcohol

5. Legal status

6. Social and familial status

7. Mental health status¹²

IMAGING:

Imaging may be included in the addiction evaluation panel, even though it is not common in clinical practice. Researchers discovered that in detoxified cocaine abusers, lower activity in the orbito frontal cortex and anterior cingulate gyrus was associated with fewer dopamine (DA D2) receptors.

Liquid chromatography, Mass spectroscopy, Ion mobility spectroscopy:

Certain drugs, including kratom and bath salts, cannot be detected by a standard blood test or urine drug test. Methods including ion mobility spectrometry (IMS), mass spectrometry, and liquid chromatography are useful^12-13.

DRUG DEPENDENCY EXAMINATION:

A medical examination conducted by a DOH- Accredited Physician to evaluate the extent of drug abuse of a person and to determine whether he/she is a drug dependent or not, which includes history taking, intake interview, determination of a criteria for drug dependency¹⁴.

TREATMENT/MANAGEMENT:

Pharmacologically, acamprosate, naltrexone, and disulfiram can be used to treat alcoholism. Each plays a role in alcohol addiction and dependency. Since any alcohol ingested produces relatively short-lived hangover-like symptoms to discourage continued drinking, disulfiram is useful in treating patients who have just quit and require assistance maintaining abstinence. Acamprosate lessens the early withdrawal symptoms, whereas naltrexone eliminates the feeling of reward or pleasure associated with drinking. Diazepam and chlordiazepoxide are examples of long-acting benzodiazepines that can be used to treat alcohol intoxication during relapse episodes.^15-16

In the end, nevertheless, these pharmacological treatments are coupled with non-pharmacological techniques for maximum effectiveness as well as to restrict and stop substance use from progressing into abuse and dependency. For instance, pharmacological treatments for nicotine dependency that are used under the guidance and compassion of a physician produce about twice as much long-term abstinence¹⁶.

DIFFERENTIAL DIAGNOSIS:

Eliminating the addiction's underlying causes should be part of the differential diagnosis for addiction. The following are some possible root causes. Significant mood swings can be a symptom of bipolar illness, which affects over half of people with substance addiction disorders. Alcohol abusers often suffer from post-traumatic stress disorder (PTSD). All addicts should be evaluated for PTSD. Even though PTSD and addiction have distinct symptoms, treating the underlying cause of PTSD can lessen or even completely eradicate the addiction.

The following is a useful acronym for the emergency department doctor to remember, given the majority of intoxication patients entail periods of altered mental status: A: Alcohol E-encephalopathy (hepatic, hypertensive), electrolytes, hormones, and the environment I-insulin. O-oxygen and opiates U-uremia T-toxins and trauma I: elevated intracranial pressure and infection P: poisoning, porphyria, and psychosis S: seizure, shock, and stroke.¹⁷

Addiction stages:

It refer above to the history and physical discussion to review the steps of addiction.

Stages of recovery and change from addiction include:

1. Pre-contemplation: the patient still has yet to acknowledge the problem.

2. Contemplation: the patient has recognized the problem but not yet dealing with it/

3. Preparation: the patient makes an appointment to discuss receiving help

4. Action: the patient begins treatment to reach and maintain abstinence

5. Maintenance: the patient has become abstinent and is maintaining positive coping strategies

6. Relapse: during the maintenance phase, patients may fall into the relapse stage from time to time and restart the recovery process^18-19.

PROGNOSIS:

The long-term consequences of drug use are well established; individuals with a diagnosis pass away 22.5 years sooner than those without one. The harmful effects of chemicals on several systems, including as the respiratory, neurological, and cardiac systems, are linked to this longevity. Additionally, older persons have better long-term results than young adults, particularly older women, who had 30-day abstinence rates of 52% compared to 40% for younger ones, according to a 5-year study on alcohol and drug rehabilitation treatment. In addition to age, other factors that affect these figures include gender and social networks.

As of right now, there is a direct correlation between when patients start treatment and changes in mortality risk. These factors determine the prognosis¹⁹.

COMPLICATIONS:

Wernicke encephalopathy and Korsakoff syndrome are anticipated side effects of long-term alcohol consumption. The three symptoms of Wernicke encephalopathy are ataxia, ophthalmoplegia, and confusion (though often only one is present 20% of the time). The bilateral mammillary bodies and hippocampus regions atrophy are classic CT and MRI imaging findings.

A typical side effect of long-term alcohol consumption is hepatic stenosis, which is caused by triglycerides, phospholipids, and cholesterol esters that are eventually produced by alcohol-induced ROS production, which changes lipid metabolism. The most important risk factor for chronic pancreatitis is long-term heavy drinking. The process starts with acute heavy drinking, which over time causes the pancreas to develop fibro-tic and inflammatory alterations due to the harmful consequences of alcohol metabolism. In particular, the anticipated fibro-tic alterations are brought about by the activation of the pancreatic stellate cells.

Addicts frequently have one or more coexisting medical diseases, such as heart or lung illness, stroke, cancer, or mental health disorders. Blood tests, chest X-rays, and imaging scans can all demonstrate the harmful effects of chronic drug usage on the body^19-20.

POSTOPERATIVE AND REHABILATION CARE:

The foundation of treating an addict, from sobriety to sustaining their remission, is rehabilitation therapy. Numerous public and private modalities, including residential community treatment facilities, free outpatient treatment programs, and methadone clinics, have been established since the 1960’s.

The 12-step programs, such as Cocaine Anonymous, Narcotics Anonymous, and Alcoholics Anonymous (AA), are among the most popular and successful. Peer support groups are widely used in addiction treatment because they help with co-occurring mental health issues and drug addiction rehabilitation. Increased self-efficacy, self-confidence, and healthy coping mechanisms to sustain sobriety are some of the benefits of these programs. In general, pharmacological deterrents and peer support groups are fail-safes used in addiction management rehabilitation therapy to prevent relapse²⁰.

CONSULTATIONS:

Since addiction results from underlying behavioral or psychological problems, psychiatric consultations are required. However, medical, surgical, or trauma consultations are required because addiction is linked to numerous medical or surgical consequences. These consultations are also necessary to treat imminent death from consequences related to stimulants like cocaine and amphetamine, such as myocardial infarction, acute kidney failure, rhabdomyolysis, etc^20-21.

ENHANCING HEALTHCARE TEAM OUTCOMES:

An inter professional team is essential to therapy since addiction is a very complicated disorder that involves numerous experiences of abstinence followed by relapse. In order to help the patient maintain abstinence, treatment swiftly expands to include inter-professional teams after the clinician diagnoses and identifies risk factors. Primary care physicians can screen patients using the aforementioned criteria after conducting a comprehensive evaluation. Regular follow-up care is necessary for these patients. Support from family and friends can also be used to stop addiction from getting worse

Nurses are essential during relapses. They can assist in monitoring the patient's vitals and ensuring that the right drugs and fluids are given as soon as possible to treat acute intoxication's and help the patient stop using drugs. Another crucial component of the inter-professional team is the pharmacist. If the addiction involves prescription drugs, they might be the first to discover addicted behaviors. Additionally, they are useful tools for detoxification, helping doctors in rehab and treatment facilities, confirming dosage, and looking for drug combinations.

The roles of primary care physicians, emergency department physicians, nurses, 12-step programs, nutritionists, and psychiatrists in identifying and treating addiction patients have been well studied. To get the best results for patients with addiction disorders, the inter-professional team of physicians, nurses, specialists, psychologists, pharmacists, dietitians, and social workers must coordinate their efforts²¹.

CONCLUSION:

Here, we highlight promising treatments that may be used to treat drug addiction from a large body of basic literature (mostly based on rodent models). Treatments like GluA2-lacking AMPAR antagonists, mGluR1 positive allosteric modulators (which are in line with other promising neuromodulation therapies like rTMS or transcranial direct current stimulation N-acetylcysteine, HDAC inhibitors, or even (in the very early stages of investigation) CRISPR/dCas9 epigenetic editing may be viable candidates for human randomized clinical trials based on their effects on synaptic plasticity and epigenetic mechanisms. Lastly, it is essential to take into account the particular clinical features of the illness in order to create a customized treatment plan. In fact, it will be crucial to evaluate the opposite path after moving from the bench to the bedside.

Drug dependence, also known as substance dependence, is a complicated problem in which a person's ability to function depends on using a psychoactive substance because of an adaptive state brought on by drug use. This can result in withdrawal symptoms and an obsessive, uncontrollable drug use despite negative consequences. Chronic drug abuse can have serious negative effects on the body and mind, such as liver damage, neurological issues, and cognitive loss^21-23.

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Received on 13.06.2025 Revised on 11.09.2025

Accepted on 24.10.2025 Published on 20.03.2026

Available online from March 23, 2026

Int. J. of Reviews and Res. in Social Sci. 2026; 14(1):33-38.

DOI: 10.52711/2454-2687.2026.00006

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