Opioid Addiction Your Comprehensive Guide

Medical Providers:
Dr. Michael Vines, MD
Alex Spritzer, FNP, CARN-AP, PMHNP
Clinical Providers:
Natalie Foster, LPC-S, MS
Last Updated: December 16, 2022

Almost 130 people die every day from opioid overdoses in the United States. Opioid overdoses were declared a public health epidemic by the Centers for Disease Control in 2011, and the crisis has intensified every year since.

Opioid addiction is not a choice or a character flaw. It is a chronic neurological disorder in which repeated opioid use restructures the brain’s reward circuitry, creating compulsive drug-seeking behavior that continues despite serious harm. Understanding how this process works is the first step toward recovery.

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Understanding Opioids: Types, Effects, and Risks

Opioids are a class of both natural and synthetic drugs. They bind to opioid receptors throughout the brain, spine, and body. They reduce pain perception and trigger dopamine release in the brain’s reward center.

Opioids come in different forms:

Illegal
opioids

Heroin, illicitly manufactured fentanyl (often sold as counterfeit pills or powder), opium

Prescription
opioids

Oxycodone, hydrocodone, codeine, fentanyl (patch or lozenge), morphine, tramadol

All opioids share the same mechanism: they activate mu-opioid receptors. That shared mechanism explains both their medical usefulness (pain relief) and their addiction potential (euphoria and reward).

How Opioids Work

When opioids bind to receptors in the brain’s reward pathway, they trigger a dopamine surge 2 to 10 times larger than natural rewards like food or social connection. The brain encodes this as an extremely important event and one to seek out and repeat.

With repeated exposure, the brain adapts. Tolerance develops, requiring higher doses to achieve the same effect. Physical dependence develops, meaning the body needs opioids to maintain normal function. And sensitization develops, making the brain hypersensitive to anything associated with past opioid use.

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What Are the Effects of Opioids?

Understanding the effects of different opioids helps people recognize both the risks of use and the signs of addiction in themselves or someone they care about.

Short-Term Effects of Opioids

Short-term effects include: pain relief, euphoria, drowsiness, slowed breathing, nausea, constipation, and confusion. At high doses, opioids suppress respiration, and this is the mechanism behind overdose death.

Tramadol Side Effects

Tramadol is a prescription opioid with a dual mechanism: it activates opioid receptors and also inhibits serotonin and norepinephrine reuptake (similar to some antidepressants). This makes its side effect profile somewhat different from other opioids.

Common tramadol side effects include:

  • Nausea, vomiting, and constipation
  • Dizziness and drowsiness
  • Headache
  • Seizures (particularly at high doses or in people taking antidepressants. This is a serious risk unique to tramadol)
  • Serotonin syndrome when combined with other serotonergic medications

Tramadol is classified as a Schedule IV controlled substance. Despite its reputation as a “milder” opioid, physical dependence and addiction can develop with regular use. Tramadol withdrawal mirrors opioid withdrawal and can also include antidepressant discontinuation symptoms.

Fentanyl Side Effects

Fentanyl is a synthetic opioid approximately 100 times more potent than morphine. Prescription fentanyl is used for severe chronic pain or surgical anesthesia. Illicitly manufactured fentanyl (IMF) is the primary driver of the current overdose crisis.

Fentanyl side effects include:

  • Extreme sedation and drowsiness
  • Respiratory depression (the primary overdose mechanism)
  • Confusion and impaired judgment
  • Nausea and vomiting
  • Muscle rigidity at high doses

The danger of illicit fentanyl is its potency: a dose the size of a few grains of salt can be lethal. Because IMF is increasingly pressed into counterfeit pills designed to look like oxycodone, Xanax, or other common medications, users often do not know they are consuming fentanyl.

Long-Term Effects of Opioids

Long-term opioid use produces physical dependence, tolerance, and, in many cases, addiction.

Additional long-term effects include:

  • Hormonal disruption (reduced testosterone, irregular menstrual cycles)
  • Immune system suppression
  • Hyperalgesia (increased pain sensitivity, counterintuitively worsened by chronic opioid use)
  • Cognitive impairment affecting memory and decision-making

Understanding the effects is the first step. When you're ready to address them, The Hope House is here

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What Is Opioid Addiction?

Opioid addiction is more than physical dependence. It is characterized by compulsive opioid use that continues despite serious consequences such as lost jobs, damaged relationships, and deteriorating health. The compulsion continues because the neurological changes described above override the brain’s capacity for normal decision-making.

Three things define it:

1. Tolerance

The brain requires higher doses to produce the same effect. Patients often describe a point where they were using “just to feel normal” and not to feel high.

2. Physical Dependence

The body functions abnormally without opioids. Stopping produces withdrawals like muscle pain, nausea, vomiting, anxiety, and cravings. This is a biological adaptation, not a weakness.

3. Compulsive Use Despite Consequences

The defining feature of opioid use disorder is continued use despite clear, recognized harm. This reflects the structural neurological changes from chronic opioid exposure, and it is why recovery requires more than willpower.

The Opioid Epidemic

The United States has experienced three escalating waves of opioid overdose deaths since the 1990s:

Wave 1 (1990s to 2010)

Prescription opioid deaths surged after aggressive marketing of long-acting oxycodone to primary care physicians.

Wave 2 (2010 to 2013)

Heroin deaths rose as prescription opioid supply restrictions drove users to illicit markets.

Wave 3 (2013 to present)

Illicitly manufactured fentanyl entered the drug supply, dramatically accelerating overdose deaths.

In 2021, the CDC documented 80,411 opioid-related deaths. This was the highest annual total ever recorded. Between 1999 and 2021, nearly 500,000 people died from opioid overdoses.

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Who Is Most Likely to Abuse Opioids?

No single factor predicts opioid addiction. The disorder typically develops from a combination of genetic, psychological, and environmental variables.

Family History of Substance Use

A family history of any substance use disorder doubles the risk of opioid addiction. Twin studies indicate that roughly 50% of addiction risk is heritable.

Co-occurring Mental Health Conditions

Major depressive disorder, PTSD, anxiety disorders, and ADHD all significantly increase opioid use disorder risk. Approximately 50% of people with opioid addiction have a co-occurring psychiatric diagnosis.

Biological
Sex

Women develop tolerance more quickly than men and progress from initial use to addiction faster. Women also receive opioid prescriptions at higher rates and are more likely to develop chronic pain conditions that lead to opioid treatment.

Age of First Use

People between the ages of 18 and 25 face the highest addiction risk from opioid exposure. The prefrontal cortex, which governs impulse control, is not fully developed until age 25.

Prior Opioid Prescription

Between 21% and 29% of patients prescribed opioids for chronic pain misuse them. Of those who misuse, 8% to 12% develop opioid use disorder. Approximately 80% of heroin users first misused prescription opioids.

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How Is Opioid Addiction Diagnosed?

The DSM-5 defines opioid use disorder based on 11 behavioral, psychological, and physical criteria. A diagnosis requires at least two criteria present within the same 12-month period.

The criteria include: taking opioids in larger amounts than intended, persistent failed efforts to cut back, spending significant time obtaining or recovering from opioids, intense cravings, failure to meet obligations, continued use despite harm, and tolerance or withdrawal.
Severity classification:

  • 2 to 3 criteria: Mild opioid use disorder
  • 4 to 5 criteria: Moderate opioid use disorder
  • 6 or more criteria: Severe opioid use disorder

A diagnosis opens the door to treatment. The Hope House specializes in evidence-based care for every level of severity.

addiction can cause unpleasant thoughts or feelings of anxiety

Around 200 Americans die each day from opioid overdose

icon depicting panic attack which is one of the symptoms of withdrawal

21% to 29% of chronic pain patients prescribed opioids misuse them

Icon Depicting Body Tremors

8% to 12% develop opioid use disorder

icon depicting hallucinations

Nearly 80% of heroin users first misused prescription opioids

Mood Change Are A Common Symptom Of Addiction

2.1 million Americans have opioid use disorder (National Survey on Drug Use and Health, 2022)

Icon Depicting Body Tremors

Only 1 in 5 people with opioid use disorder receives treatment in a given year

Recovery from opioid addiction is achievable with the right support. Evidence-based treatment combines medication-assisted treatment (MAT) with behavioral therapy to address both the biological and behavioral dimensions of addiction.

FDA-approved medications for opioid addiction:

  • Buprenorphine/naloxone (Suboxone): Reduces cravings and withdrawal without significant euphoria
  • Methadone: Eliminates withdrawal and blocks the effect of additional opioids
  • Naltrexone (Vivitrol): Blocks opioid receptors entirely after detox is complete

The Hope House provides residential treatment in Scottsdale, Arizona. For patients who need medical detox first, Scottsdale Detox provides 24/7 medically supervised withdrawal management. For patients stepping down from residential care, Arizona IOP offers intensive outpatient treatment.

Oxycodone is the active compound. OxyContin is a brand name for extended-release oxycodone, designed to release the drug slowly over 12 hours. Immediate-release oxycodone produces a faster onset with a shorter duration. Both contain the same molecule.

Tramadol is significantly less potent than oxycodone and has a lower abuse potential for most patients. However, tramadol carries unique risks that oxycodone does not, particularly seizure risk and serotonin syndrome when combined with antidepressants. Both can produce physical dependence and addiction with regular use. Tramadol is Schedule IV; oxycodone is Schedule II.

Yes. Tramadol activates mu-opioid receptors and is classified as a controlled opioid analgesic. Its side effect profile differs from other opioids due to its secondary mechanism, but it produces opioid-type dependence with regular use.

Fentanyl is a synthetic opioid approximately 100 times more potent than morphine. Illicitly manufactured fentanyl is the primary driver of the current overdose crisis because it is increasingly pressed into counterfeit pills designed to look like oxycodone, Xanax, and other common medications. Users often do not know they are consuming fentanyl. A dose the size of a few grains of salt can be lethal.

Physical dependence means the body has adapted to the presence of opioids and produces withdrawal symptoms when the drug is stopped. Dependence can develop in anyone who takes opioids regularly, including patients following a prescribed dosing schedule. Addiction is characterized by compulsive use despite serious harm. A person can be physically dependent without being addicted, but addiction almost always involves physical dependence.

The DSM-5 defines opioid use disorder based on 11 criteria covering behavioral, psychological, and physical symptoms. A diagnosis requires at least two criteria present within the same 12-month period. Severity is classified as mild (2 to 3 criteria), moderate (4 to 5 criteria), or severe (6 or more criteria).

Yes. Opioid use disorder is a treatable chronic condition. Evidence-based treatment combines FDA-approved medications such as buprenorphine, methadone, or naltrexone with behavioral therapy. Patients who receive medication-assisted treatment combined with therapy have significantly better outcomes than those who receive either alone.

Opioid withdrawal occurs when someone who is physically dependent on opioids stops or significantly reduces use. Symptoms include muscle aches, nausea, vomiting, diarrhea, sweating, anxiety, insomnia, and intense cravings. Withdrawal is rarely fatal but is severely uncomfortable without medical support, which is why medically supervised detox is strongly recommended.

Treatment length varies depending on the severity of use, co-occurring conditions, and the level of care required. Medical detox typically takes 5 to 10 days. Residential treatment programs generally run 30 to 90 days. Intensive outpatient treatment typically follows for an additional 8 to 12 weeks. Medication-assisted treatment may continue for months to years, depending on individual clinical needs.

Key signs include using opioids in larger amounts or for longer than intended, repeated failed attempts to cut back, continued use despite harm to health, work, or relationships, spending significant time obtaining or recovering from opioids, and intense cravings. If any of these are present, a clinical evaluation is the appropriate next step.
Call (480) 447-4252 to speak with a member of The Hope House admissions team, available 24/7.

The Hope House 28901 N 114th St. Scottsdale, AZ 85262 contact@thehopehouse.com

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