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Post-Acute Withdrawal Syndrome (PAWS): Symptoms and How Long It Lasts

Medically reviewed by Paul Ballas, D.O.
Posted on October 29, 2026

Key Takeaways

  • Post-acute withdrawal syndrome, sometimes called PAWS, is a condition where withdrawal symptoms from opioids continue or develop even after the initial detox period has passed.
  • PAWS can affect mood, sleep, energy, and the ability to think clearly, with symptoms like anxiety, depression, brain fog, and cravings. For some people, these symptoms may last several weeks or even months, though they often become less noticeable over time and can vary depending on a person's history with opioids.
  • Talking with a healthcare provider is an important step for anyone experiencing symptoms after opioid withdrawal, as they can help identify what is going on and explore options that may bring relief, including therapy, lifestyle changes, and other forms of support.
  • View all takeaways

Even after the worst of opioid withdrawal has passed, some symptoms may linger for weeks or months. This is sometimes called post-acute withdrawal syndrome (PAWS).

Recovery from opioid use disorder can have ups and downs, and PAWS symptoms may make the process more difficult.

Here’s what you need to know about PAWS, its symptoms, and how to get the support you need.

🗳️ If you experienced PAWS during your recovery, how long did it last?
Less than three months
Between three and six months
Between six months and one year
Over one year

Acute Opioid Withdrawal vs. PAWS

Acute withdrawal begins when you stop or reduce opioids your body has become dependent on. During opioid detox, symptoms from short-acting opioids like heroin may last four to 10 days, while methadone withdrawal symptoms can last 14 days or longer.

PAWS, also called protracted withdrawal, describes symptoms that continue or develop after acute withdrawal. Compared with acute withdrawal, PAWS has been studied less and has no established diagnostic criteria or universally accepted definition.

Common PAWS Symptoms

PAWS can affect your mood, sleep, energy, and ability to think clearly.

Mood and Emotional Changes

You might notice:

  • Anxiety and panic attacks — Feeling constantly worried, on edge, or suddenly overwhelmed by fear
  • Depression — Feeling sad, hopeless, or unable to enjoy things that once made you happy
  • Mood swings — Going from feeling fine to upset, angry, or tearful without much warning
  • Irritability — Getting frustrated or angry over things that wouldn’t normally bother you
  • Emotional numbness — Feeling disconnected, unmotivated, or as though you’re just going through the motions

Some people find that even minor situations can trigger strong emotions. As one MyOpioidRecoveryTeam member put it, “PAWS gave me a pretty bang of anxiety. Really, really minor things can cause me ludicrous levels of anxiety.”

Sleep, Energy, Concentration, and Cravings

Other reported symptoms include:

  • Insomnia — Difficulty falling or staying asleep
  • Fatigue — Feeling exhausted or drained, even after resting
  • Brain fog — Difficulty concentrating, remembering things, or thinking clearly
  • Low motivation — Struggling to find energy or interest to do everyday activities
  • Cravings — Feeling a strong urge to use opioids again, sometimes after a period without cravings

    How Long Does PAWS Last?

    For some people recovering from opioid use, PAWS symptoms can last several weeks or months. One review reports that symptoms such as fatigue, insomnia, and restlessness may continue for six to nine months in some cases.

    That doesn’t mean you’ll feel unwell every day for nine months. Symptoms may become less noticeable over time, although you might still have difficult days when they return.

    How long symptoms last can vary depending on your history of opioid use, the type of opioid involved, and your physical and mental health. Researchers also haven’t established a single timeline that applies to everyone.

    One MyOpioidRecoveryTeam member shared, “PAWS hit me like a dump truck when I got off methadone. My recovery wasn’t all puppy dogs and ice cream, but one year into sobriety, I’m finally starting to feel like myself again.”

    Getting Support During Recovery

    There’s no single treatment proven to resolve PAWS, but that doesn’t mean you have to put up with every symptom. Small changes, practical coping strategies, and medical support may help you feel better.

    Medical Options for PAWS Symptoms

    There’s no medication specifically approved to treat PAWS. However, some symptoms may respond to individualized treatment.

    For example, your healthcare provider may recommend therapy or appropriate medication for persistent depression, anxiety, or insomnia. Cognitive behavioral therapy (CBT) may help you manage distressing thoughts, emotional changes, and sleep difficulties.

    If you’re already taking medications such as buprenorphine (Brixadi) or methadone (Methadose) for opioid use disorder, continue following your prescribed treatment plan. If you think you have PAWS, talk to your doctor before stopping your medication or changing how you take it.

    Lifestyle Tips for Managing PAWS

    Simple self-care strategies may help you manage fatigue, brain fog, and sleep problems.

    • Keep a consistent sleep schedule — Try going to bed and waking up at the same time each day, even after a restless night.
    • Exercise regularly — A short walk, stretching, or gentle exercise may help ease stress and improve sleep.
    • Work around brain fog — Use reminders, write things down, and tackle demanding tasks when you feel most alert.
    • Make room for rest — Break larger tasks into smaller steps rather than pushing through exhaustion.
    • Try mindfulness — Breathing exercises, meditation, or journaling may help you manage difficult emotions.

    You don’t have to do everything perfectly. Even one small change that makes your day easier is worth keeping.

    Managing Cravings When They Return

    Cravings can catch you off guard, even after a period without them. Having a plan can help you respond before an urge becomes overwhelming.

    • Know your triggers — Stress, seeing your old dealer or a friend who’s using, certain places, or difficult emotions may bring cravings to the surface.
    • Give yourself some distance — Leave situations that make the urge harder to manage.
    • Distract yourself — Try a walk, music, or another activity that keeps you occupied.
    • Talk to someone — Reach out to a trusted person, counselor, or support group rather than dealing with the craving alone.

    If cravings are becoming harder to manage on your own, let your treatment team know. You may need additional support or an adjustment to your care plan.

    Talk to Your Healthcare Provider

    Not every symptom that shows up after acute opioid withdrawal is PAWS. Get medical help if you’re experiencing worsening depression or anxiety, severe insomnia, new physical symptoms, or difficulty managing daily activities.

    Track your symptoms, including when they occur, how long they last, and what makes them better or worse. Your healthcare provider can check for other possible causes and recommend treatment or additional support.

    PAWS symptoms can be frustrating, especially when you’re working hard on your recovery. You don’t have to manage them alone. Talk with your healthcare team about what you’re feeling and what might help.

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