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Opioid Use Disorder: Types, Symptoms, Effects, Diagnosis, and Treatment

Opioid use disorder (OUD), or opioid addiction, is the problematic pattern of opioid use leading to major issues and psychological distress in lives. Opioid use disorder usually begins with prescribed opioid medications or illicit drugs, such as heroin.

Opioid Use Disorder: Types, Symptoms, Effects, Diagnosis, and Treatment
35 Minutes Read | Published Nov 20 2024 | Updated Nov 28 2024 Expert Verified
Emma Collins
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Emma Collins
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Opioid use disorder (OUD), or opioid addiction, is the problematic pattern of opioid use leading to major issues and psychological distress in lives. Opioid use disorder usually begins with prescribed opioid medications or illicit drugs, such as heroin.

 

The main types of opioid use disorder and opioid addiction are heroin addiction, oxycodone addiction, morphine addiction, codeine addiction, fentanyl addiction, methadone addiction, oxymorphone addiction, and tramadol addiction.

 

The main symptoms of opioid use disorder include drowsiness, weight loss, constricted pupils, intense cravings, neglect of responsibilities, and social withdrawal. Opioid use disorder is mainly caused by long-term opioid use and genetic and environmental factors.

 

Some side effects of opioid use disorder are respiratory issues, organ damage, emotional trauma, relationship problems, and the risk of overdose and death. Treatment options include medication-assisted therapy (MAT), such as methadone or buprenorphine, cognitive behavioral therapy (CBT), inpatient or outpatient programs, and support groups.

What are Opioids?

Opioids are a class of drugs that interact with opioid receptors in the brain to relieve pain and produce feelings of euphoria. Opioids are divided into two main categories, including prescription opioids and illegal opioids.

Prescription opioids, such as oxycodone, hydrocodone, and morphine, are commonly prescribed by doctors for managing moderate to severe pain after surgeries or injuries. Despite being effective for pain relief, they carry a high risk of addiction and misuse if abused.

On the other hand, opioids like heroin are illegal and unregulated. They are used for recreational purposes and come with even greater health risks, including overdose and death. Heroin is derived from morphine and is more dangerous because of its potency and the unknown substances it’s mixed with.

What is Opioid Use Disorder?

Opioid use disorder (OUD), or opioid addiction, is a medical condition that refers to the compulsive use of opioids despite bearing their negative effects. The National Library of Medicine defines OUD as the chronic use of opioids, leading to major stress and cognitive impairment.

 

The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) defines OUD as a chronic relapsing disorder, diagnosed when an individual experiences at least two of 11 specific symptoms over 12 months. These symptoms include cravings, increased tolerance, unsuccessful attempts to quit, and continued use despite negative personal and social problems.

 

It’s important to understand that opioid addiction and physical dependence are different. Physical dependence is the body’s adaptation to opioids that results in withdrawal symptoms when individuals stop taking the drug. On the other hand, opioid addiction portrays the signature drug-seeking behavior. It involves strong psychological cravings even when opioids are no longer needed for pain relief.

How Common is Opioid Use Disorder?

Opioid use disorder is very common because almost 7.6 million adults in the US are living with the addiction, according to Katherine M. Keyes, Caroline Rutherford, and Ava Hamilton in their research.

 

In 2019, 70,630 people in the United States died from drug overdoses, with synthetic opioids involved in nearly half of these cases, according to the World Health Organization. Between 2013 and 2019, the death rate from synthetic opioids rose by 1,040 %. This trend worsened during the COVID-19 pandemic, as overdose deaths with synthetic opioids increased even further.

What are the Types of Opioid Use Disorder?

complete-list-of-the-types-of-opioid-use-disorder

The most common types of opioid use disorder include heroin addiction, oxycodone addiction, hydrocodone addiction, morphine addiction, codeine addiction, methadone addiction, and tramadol addiction.

 

The complete list of the types of opioid use disorder is below.

 

  • Heroin Addiction: Heroin addiction involves the compulsive use of heroin, an illegal opioid that causes intense euphoria and has a high potential for addiction and overdose.

  • Oxycodone Addiction: Oxycodone addiction is the misuse of oxycodone, a prescription opioid often prescribed for pain relief. It leads to dependency and withdrawal symptoms when misused.

  • Hydrocodone Addiction: Hydrocodone addiction is the abuse of hydrocodone, another prescription pain reliever commonly found in combination with other medications.

  • Morphine Addiction: Morphine addiction refers to the problematic use of morphine, a powerful prescription opioid used for severe pain management.

  • Codeine Addiction: Codeine addiction is the misuse of codeine, a less potent opioid often prescribed for mild to moderate pain and cough.

  • Fentanyl Addiction: Fentanyl addiction involves the constant use of fentanyl, a highly potent synthetic and illegally manufactured opioid.

  • Methadone Addiction: Methadone is a long-acting opioid used in addiction treatment and pain management, which leads to dependence when misused.

  • Buprenorphine Addiction: Buprenorphine is a partial opioid used in treatment for opioid dependence that still leads to addiction if not managed correctly.

  • Hydromorphone Addiction: Hydromorphone is a potent prescription opioid used for severe pain relief, but results in addiction and severe withdrawal symptoms if used for long.

  • Oxymorphone Addiction: Oxymorphone is a strong prescription opioid that gives an intense high and comes with great risk for addiction.

  • Tramadol Addiction: Tramadol is a prescription medication for moderate pain that has opioid-like effects and leads to dependence and addiction.

What are the Signs & Symptoms of Opioid Use Disorder?

Signs-Symptoms-of-Opioid-Use-Disorder

The signs and symptoms of opioid use disorder include drowsiness, weight loss, constricted pupils, intense cravings, neglect of responsibilities, social isolation, mood swings, and increased tolerance.

 

These opioid use disorder symptoms are explained below.

 

  • Drowsiness: Drowsiness refers to constant sleepiness or lethargy that makes it difficult to stay awake or alert. These sedative effects and sleep disturbances are one of the main symptoms of opioid use disorder, according to the National Institutes of Health.

  • Weight Loss: OUD leads to significant and unexplained weight loss due to decreased appetite and poor nutrition, according to Melody N Chavez and Khary K Rigg in their research “Nutritional implications of opioid use disorder: A guide for drug treatment providers.”

  • Constricted Pupils: Constricted pupils (miosis), is a condition that makes pupils abnormally small. Constricted pupils are one of the most common physical signs of opioid consumption, according to research published in the National Library of Medicine.

  • Intense Cravings: Intense cravings refer to powerful and overwhelming urges to consume opioids. These urges make it challenging to resist the desire despite making efforts to quit opioid use.

  • Neglect of Responsibilities: People with opioid use disorder fail to fulfill daily obligations and responsibilities, whether it’s work, academics, or personal life. This is because opioid use becomes their top-most priority compared to other duties.

  • Social Isolation: Social isolation means pulling away from family, friends, and social activities. Individuals isolate themselves to hide opioid use or due to changes in behavior and interests, according to the research “Social isolation, residential stability, and opioid use disorder.”

  • Mood Swings: Individuals with OUD experience sudden and extreme changes in mood, including irritability, depression, and anxiety, especially when they are not getting the drug.

  • Increased Tolerance: People with OUD build a tolerance towards the drug, and need to take higher doses of opioids to achieve the trip or high they want. Increased tolerance happens because the body gets used to the normal doses of the drug.

  • Withdrawal Symptoms: Individuals with OUD experience physical and psychological symptoms such as nausea, headaches, vomiting, and muscle aches when not using opioids.

What Causes Opioid Use Disorder?

causes-of-opioid-addiction

The causes of opioid use disorder include long-term opioid use, genetic factors, environmental factors, chronic pain, and mental health disorders.

 

These causes of opioid addiction are listed below.

 

  • Long-term Opioid Use: Long-term use of prescribed or illicit opioids leads to physical dependence and eventually addiction. Individuals prescribed opioids for more than 30 days had a 30% higher chance of developing dependence, according to a study published in the New England Journal of Medicine.

  • Genetic Factors: Genetic factors play a significant role in the development of opioid addiction, according to Richard C Crist, Benjamin C Reiner, and Wade H Berrettini in their research “A Review of Opioid Addiction Genetics.”

  • Environmental Factors:  Exposure to environments where opioid misuse is common, such as communities with high opioid prescription rates or a family history of substance abuse increases the chances of OUD, according to research published in the National Library of Medicine.

  • Chronic Pain: Individuals with chronic pain conditions are often prescribed opioids, which leads to addiction as they seek relief. A study published by the National Institutes of Health found that about 64.4% of chronic pain patients on opioid therapy develop an addiction to the drug.

  • Mental Health Disorders: Individuals with pre-existing mental health disorders like anxiety, depression, or PTSD turn to opioids as a way to self-medicate, according to Tyler Marshall, Karin Olson, and Erik Youngson in their research “Preexisting mental health disorders and risk of opioid use disorder in young people: A case-control study.”

What are the Side Effects of Opioid Use Disorder?

Side-Effects-of-Opioid-Use-Disorder

The side effects of opioid use disorder include respiratory issues, organ damage, emotional trauma, healthcare costs, relationship problems, and the risk of overdose and death.

 

These side effects are explained below.

 

  • Respiratory Issues: Opioids severely affect the central nervous system, which slows down breathing to dangerous levels, leading to respiratory failure, according to the study “Undetected Respiratory Depression in People with Opioid Use Disorder.” OUD even leads to permanent respiratory damage in severe cases.

  • Organ Damage:  Long-term opioid misuse causes damage to essential organs like the liver and kidneys, according to the study “Liver and kidney toxicity in chronic use of opioids: An experimental long-term treatment model.” The toxins from opioids when taken in high doses put extra strain on these organs. 

  • Emotional Trauma: Opioid use disorder leads to emotional trauma and related problems, including anxiety, depression, and feelings of isolation. The burden and guilt of addiction impact a person’s mental health.

  • Healthcare Costs: Opioid use disorder results in high healthcare costs for individuals and the healthcare system due to frequent hospitalizations and treatment for overdoses.

  • Relationship Problems: Substance addiction, including OUD, leads to relationship problems with family and friends, according to the study “Changes in Social, Romantic, and General Life Satisfaction Over the Course of a Substance Use Disorder” by Vanya Vojvodic and Nina C. Christie.

  • Risk of Overdose and Death: The most serious side effect of OUD is the risk of overdose, which results in coma or death, according to research published by the National Institutes of Health. In 2022, more than 80,000 opioid overdose deaths were reported in the U.S., highlighting the severity of this risk (SHADAC - State Health Access and Data Assistance Center).

How is Opioid Use Disorder Diagnosed?

Opioid use disorder (OUD) is diagnosed based on criteria given in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Medical professionals look for at least two of the 11 symptoms over a 12-month period, such as consuming the drug in larger amounts, unsuccessful efforts to cut down, strong cravings, failure to fulfill obligations, withdrawal symptoms,  and continued use despite negative effects.

 

Healthcare professionals conduct clinical assessments, such as detailed interviews, questionnaires, and self-reported behaviors to understand the severity of dependence. Additionally, healthcare providers use physical exams and toxicology tests to detect opioid misuse. The DSM-5 differentiates between mild, moderate, and severe OUD, depending on the number of symptoms present.

What are the Treatment Options for Opioid Use Disorder?

Treatment-Options-for-Opioid-Use-Disorder

The treatment options for opioid use disorder include detoxification, medication-assisted treatment (MAT), cognitive behavioral therapy (CBT), inpatient treatment, outpatient treatment, and support groups.

 

These opioid use treatment options are explained below.

 

  • Detoxification: Detoxification is the medical process of safely withdrawing an individual from opioids and managing withdrawal symptoms to prepare them for further treatment. Detoxification is a necessary process for physical stability, according to research published by Harvard Medical School. However, it does not address the psychological parts of the addiction.

  • Medication-Assisted Treatment (MAT): Medication-assisted treatment (MAT) combines medications like methadone, buprenorphine, or naltrexone with counseling to reduce cravings and withdrawal symptoms. The MAT approach has been shown to significantly improve treatment outcomes, according to the National Library of Medicine. However, recovery takes several months to years.

  • Cognitive Behavioral Therapy (CBT): CBT helps individuals identify and change negative thought patterns related to substance use. CBT has always shown better and positive outcomes in treating OUD, according to the study “Cognitive Behavioral Therapy Improves Treatment Outcomes for Prescription Opioid Users in Primary-Care Based Buprenorphine Treatment.” However, CBT requires several months of regular sessions and is not sufficient as a solo treatment for severe cases.

  • Inpatient Treatment: Inpatient treatment provides 24/7 care in a hospital or rehab center to offer intensive therapy and medical support. These programs typically last from 30 to 90 days and are beneficial for individuals with severe OUD or those who have relapsed in previous treatments. However, they are costly and require time away from daily life.

  • Outpatient Treatment: Outpatient treatment programs allow individuals to receive treatment while continuing their daily activities. They include therapy, MAT, or both. Recovery timelines are flexible, ranging from weeks to months. However, it lacks the intensity required for some people with severe addiction.

  • Support Groups: Support groups offer a sense of community, friendship, and accountability for individuals with OUD in recovery. These groups are usually free and last for as long as you want, depending on individual progress. While support groups are valuable for ongoing recovery, they do not provide the medical care needed for detoxification or psychological issues.

How to Prevent Opioid Use Disorder?

To prevent opioid use disorder, healthcare providers should try to use non-opioid alternatives for pain relief whenever possible and prescribe opioids only when necessary. Patients should understand the risks of addiction, so clear communication is key.

 

Public awareness campaigns are essential to educate people about the dangers of opioid misuse and the importance of safe storage and disposal of medications. Schools and community groups host informative sessions to discuss how to recognize signs of addiction and share available resources for help.

How Does Opioid Use Disorder Relate to Substance Addiction?

Opioid use disorders relate to substance addictions because they fall under the same category. OUD is a specific type of substance addiction that involves a troubling pattern of using opioids, which can lead to serious issues in a person’s life. It falls under the broader category of substance use disorders, which includes various types of addictions like alcohol and stimulants. Both OUD and substance addiction involve cravings, compulsive use, and negative impacts on personal and social life.

Are Opioid use disorder and drug addiction characterized by compulsive drug-seeking behavior?

Yes, both opioid use disorder and drug addiction are characterized by compulsive drug-seeking behavior. individuals with opioid use disorder and drug addiction continue to seek and use drugs despite negative impacts on their health, relationships, and responsibilities. Opioids mess with the brain chemistry and lead to intense cravings and a loss of control over use. Drug addiction attacks the brain’s reward system through frequent exposure and makes it harder for the person to experience pleasure from everyday activities.

Is detoxification necessary for opioid and alcohol dependence?

 

Yes, detoxification is necessary for both opioid and alcohol dependence. Stopping either of them suddenly causes intense and sometimes dangerous symptoms. Detoxification is particularly important in cases of an alcohol use disorder where withdrawal can be life-threatening.

 

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