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Physiological AdaptationUncomfortable, NOT life-threatening

Opioid WithdrawalNCLEX cheat sheet

Opioid withdrawal results from stopping or reducing opioids in a dependent person, producing intensely uncomfortable but rarely life-threatening symptoms (in contrast to alcohol or benzodiazepine withdrawal).

23 key facts 5 practice questions Reviewed Oct 2026
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Signs

  • Yawning, lacrimation, rhinorrhea
  • Dilated pupils, piloerection
  • N/V/D, cramps, muscle aches

Meds

  • Methadone or buprenorphine
  • Clonidine for autonomic sx

Do

  • Hydrate, anti-emetics, comfort
  • COWS scale to assess severity

Report

  • Dehydration from V/D
  • Relapse risk → overdose danger
Key takeaway

Withdrawal causes flu-like symptoms: muscle aches, yawning, lacrimation, rhinorrhea, and sweating.

Before you read

Test yourself first: 5 questions

Question 1 of 5

A nurse assesses a client suspected of acute opioid intoxication. Which classic triad of findings supports this diagnosis?

What is opioid withdrawal?

Symptoms resemble a severe flu. Management includes comfort medications, clonidine, and medication-assisted treatment with methadone or buprenorphine.

Opioid Withdrawal illustrated

Opioid Withdrawal — medical illustration
Opioid Withdrawal — medical illustration. Illustration: Lerner & Klein / Wikimedia Commons via Wikimedia Commons, CC BY 4.0.

Key points to remember

  • Withdrawal causes flu-like symptoms: muscle aches, yawning, lacrimation, rhinorrhea, and sweating.
  • GI symptoms include nausea, vomiting, abdominal cramping, and diarrhea.
  • Other signs are dilated pupils (mydriasis), piloerection (gooseflesh), restlessness, and insomnia.
  • Opioid withdrawal is extremely distressing but rarely directly fatal in healthy adults.
  • Dehydration from vomiting and diarrhea is the main physical danger.
  • Clonidine reduces autonomic symptoms; methadone and buprenorphine ease withdrawal and craving.

Signs & symptoms

  • Yawning, lacrimation, rhinorrhea
  • Dilated pupils, piloerection
  • N/V/D, cramps, muscle aches

Nursing priorities

  1. Assess withdrawal severity (e.g., COWS scale) and monitor hydration and vital signs.
  2. Administer prescribed comfort medications: clonidine, antiemetics, antidiarrheals, and analgesics.
  3. Provide medication-assisted treatment such as methadone or buprenorphine as ordered.
  4. Replace fluids and electrolytes lost to vomiting and diarrhea.
  5. Offer emotional support and connect the client to recovery and counseling resources.

Labs & values

Potassium3.5-5.0 mEq/L (monitor with vomiting/diarrhea)
Sodium135-145 mEq/L (monitor for dehydration)
3.55.0mEq/L Normal

Patient teaching

  • Withdrawal is temporary; medication-assisted treatment greatly reduces discomfort and relapse.
  • Stay hydrated and use prescribed comfort medications as directed.
  • Reduced tolerance after detox makes relapse overdose deadly; carry naloxone and engage support.

Red flags: report now

  • Severe vomiting and diarrhea can cause dangerous dehydration and electrolyte loss requiring prompt fluids.
  • Buprenorphine given too early can precipitate acute withdrawal - confirm appropriate timing.
  • Pregnant clients in opioid withdrawal risk fetal harm and need specialized management.
  • Naloxone reversal can trigger sudden severe withdrawal and must be monitored.

References

Clinical references for this topic

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