# Post-Acute Withdrawal Syndrome | Sierra Recovery > Learn more about Post-Acute Withdrawal Syndrome, how and why it manifests, and how to handle protracted withdrawal symptoms after substance use. [Home](/) / [Blog](/blog/) / Treatment and recovery Treatment and recovery # Post-Acute Withdrawal Syndrome: Key Symptoms, Causes, and Recovery Learn more about Post-Acute Withdrawal Syndrome, how and why it manifests, and how to handle protracted withdrawal symptoms after substance use. Written byKristel Mae DavidClinical Editor Clinically reviewed by[Lucy Britton](/clinical-team/)Clinical Therapist Checked for clinical accuracy on 19 December 2025. Next review due December 2026. This article is general information and is not a substitute for advice about your own situation. Post-Acute Withdrawal Syndrome, or PAWS, is a group of symptoms that can appear weeks or months after the initial withdrawal has passed. Your body has mostly recovered, but your brain is still adjusting to sobriety. Unlike acute withdrawal, which is mainly physical, PAWS is centred on psychological and emotional effects such as anxiety, irritability, brain fog and disrupted sleep. Symptoms come and go, and stress, poor sleep or reminders of past use can worsen them. ## Before you go further, a safety note If you are physically dependent on alcohol or on benzodiazepines such as diazepam or alprazolam, do not stop taking them suddenly. Sudden withdrawal from either can cause seizures and can be life threatening. A medically supervised withdrawal is the safe route, and your GP can arrange one. In an emergency call 999 in the UK, or 112 anywhere in Europe. For urgent advice that is not an emergency, NHS 111 is available in England around the clock. Addiction affects many people throughout the United Kingdom, and the UK government reports that drug use costs England roughly £20 billion per year and alcohol use costs a further £27 billion annually. This makes recovering from addiction a major societal concern. Overcoming substance abuse is a major milestone. Getting through treatment is often difficult, and it takes commitment and conviction to complete a programme. But once you get through treatment, you may have to deal with Post-Acute Withdrawal Syndrome. ## Understanding Post-Acute Withdrawal Syndrome When you stop using alcohol, opioids, or other addictive substances, you may believe that the hardest part is over once the physical withdrawal symptoms subside. But for a lot of people, symptoms may persist. Post-Acute Withdrawal Syndrome (PAWS) is a stage of recovery wherein your body has mostly recovered, but your brain is still trying to acclimate to sobriety. ### Definition and Overview Post-Acute Withdrawal Syndrome is a group of symptoms that may appear weeks or months after the initial withdrawal. It's most common for people recovering from alcohol, opioids, benzodiazepines, or stimulants. Unlike the first wave of withdrawal, which is mostly physical, PAWS is centred on psychological and emotional effects, such as anxiety, irritability, brain fog, and messed-up sleep. These symptoms can pop up, disappear, and then come back, sometimes for months or even longer. Stress, poor sleep, or anything that reminds you of past substance use can make symptoms worse. ### Difference Between Acute and Post-Acute Withdrawal Acute withdrawal symptoms can affect you immediately after you stop using a substance. It's usually days or weeks of physical symptoms: shakes, nausea, sweating, maybe a pounding heart. Post-acute withdrawal is largely mental. Even after your body feels stable, you might still be anxious, foggy, or just unmotivated. ### Who Is Affected by PAWS? PAWS can affect anyone recovering from chronic substance use, but your risk increases if you've used for a long time or in large amounts. It's not just about alcohol or opioids; benzodiazepines and even some antidepressants can trigger it. If you've got a history of mental health troubles like depression or anxiety, you might be more likely to get PAWS. Polysubstance use can also increase your risk and the length of post-acute symptoms. Withdrawal is managed medically, and where it is needed it is completed before the residential programme begins. ## PAWS Symptoms You might feel a combination of emotional, mental, and physical symptoms that do not ease after the initial withdrawal. These symptoms can fluctuate, sometimes affecting you more strongly and sometimes not, and they may increase the risk of relapse. ### Psychological Symptoms of PAWS Emotional ups and downs are common, including anxiety, depression, and irritability. Sometimes these feelings may emerge unexpectedly with no discernible reason. Mood swings can make it difficult to keep your emotions in check. There's also anhedonia, which is not feeling much pleasure, even from things you used to enjoy. Some people feel disconnected from others. ### Cognitive and Behavioural Changes You may have trouble concentrating, and your memory might not be what it was. Brain fog, forgetfulness, and slower reactions are all common. Sleep disruption can worsen everything. Insomnia or disrupted sleep patterns can leave you tired and unfocused. Social withdrawal or just not feeling motivated can affect you as well. These issues are your brain's way of trying to reset and reorient after substance use. While these symptoms can last for months, they usually get better with rest, a structured routine, and therapy. ### Physical Symptoms Even after detox, your body might still not return to normal. Fatigue, weird sleep, and just being more sensitive to pain are all pretty standard. Muscle aches, headaches, and general weakness can persist. ### Relapse and Craving Cravings can be intense, especially when you're stressed, tired, or feeling low. The unpredictability of PAWS makes you more vulnerable to relapse. Cravings aren't just physical; they're mental, as well. Your brain might still link certain places, people, or emotions to substance use. Coping strategies to help lower relapse risk during Post-acute withdrawal syndrome include managing stress, focusing on self-care, and building supportive relationships ## Causes and Risk Factors PAWS comes from long-term changes in your brain and body after heavy drug or alcohol use. Your nervous system, stress response, and emotions all take time to normalise after addiction. The type of substance, how long you used it, and your overall health all play a part in how severe or long-lasting PAWS gets. ### Neurobiological Changes Your brain adapts to repeated substance use by changing how it handles neurotransmitters. When you quit, your brain struggles to find balance again. This is what causes lingering symptoms like anxiety and brain fog. Chronic substance use overstimulates your reward system, so regular rewards don't feel as good, and you end up depending on the substance just to feel normal. After detox, that imbalance can stick around for months. ### Substance-Specific Risk Factors Which substance you used matters in addiction recovery. Alcohol withdrawal usually comes with mood swings and sleep problems because alcohol affects GABA and glutamate. Benzodiazepine withdrawal can bring long-lasting anxiety and sensory issues. People recovering from opioids often deal with fatigue, cravings, and depression. Opioids affect your natural endorphins, so your body struggles to regulate mood and pain. ## Substances Commonly Associated with PAWS You're more likely to get post-acute withdrawal symptoms after quitting substances that affect your brain chemistry. The most common substance use disorders are alcohol, opioids, and benzodiazepines, but other drugs can also give you PAWS. ### Alcohol and Alcohol Withdrawal Syndrome If you're recovering from alcohol use disorder, symptoms might stick around even after the worst of withdrawal is over. Post-acute alcohol withdrawal can bring anxiety, insomnia, and focus problems. These symptoms can start weeks after detox and sometimes last for months. ### Opioid Use Disorder Stopping opioid use means your body and brain need time to find balance again. Post-acute withdrawal symptoms include fatigue, depression, or not enjoying things like you used to, and they can appear seemingly out of nowhere. Stress or reminders of past use can trigger cravings again. Committing to therapy and attending support groups can help you handle those moments and concentrate on your recovery. ### Benzodiazepines Benzodiazepine withdrawal can be a drawn-out process. Since these drugs affect the brain's GABA system, it's common for people to deal with lingering anxiety, sensory issues, and disturbed sleep patterns. Possible lingering effects include: - Panic attacks - Muscle pain or tremors - Cognitive fog - Heightened sensitivity to light or sound ### Other Substances Drugs like stimulants, cannabis, and antidepressants can also trigger post-acute withdrawal symptoms. These vary wildly depending on what you used and for how long. For instance, people recovering from stimulants often face mood swings and tiredness. If you're withdrawing from cannabis, irritability and sleep troubles are also common. ### Do you think you or someone you love has a problem with addiction? You do not have to be certain before you pick up the phone. One confidential call with a clinician will tell you whether this is something to act on now. [Take the self-assessment](/self-assessment/) [+44 1202 653136](tel:+441202653136) ## Timeline and Course of PAWS If you're dealing with lingering withdrawal, you'll probably notice symptoms don't appear all at once, but they may come and go. The length and strength of these symptoms depend on the substance, your health, and how long you were using. ### Onset and Duration Post-Acute Withdrawal Syndrome usually happens in about 7 to 14 days after the worst of the acute withdrawal fades. PAWS typically peaks in the first few months, especially with opioids and benzodiazepines. ### Symptom Fluctuations PAWS symptoms are rarely steady. They surge and fade, sometimes triggered by stress, poor sleep, or emotional upheaval. One day, you might feel relatively normal, then you may be anxious, depressed, or fatigued the next day. ### How Long Do PAWS Symptoms Last? The withdrawal timeline has two main parts: acute withdrawal and the post-acute stage. Acute withdrawal is mostly physical and lasts days to weeks, depending on the drug. PAWS shows up after those symptoms abate. At this point, it's largely about emotional and mental recovery: fatigue, low motivation, foggy thinking. These can linger long after your body's stable. ## Managing and Treating Post-Acute Withdrawal Syndrome Managing PAWS takes a mix of professional help, healthy habits, relapse prevention, and solid support. A structured plan can help manage anxiety, sleep problems, and cravings, making your recovery easier. ### Professional Addiction Treatment Approaches Structured addiction treatment can address both the physical and mental sides of lingering withdrawal. Medical supervision is there to keep you safe and lower the risk. Cognitive-behavioural therapy (CBT) helps you spot triggers, challenge negative thoughts, and build better ways to cope. Group and family therapy can add accountability and a social safety net. Treatment programmes often include education about relapse warning signs and stress management. Regular check-ins with addiction specialists help adjust medications and keep you moving forward. ### Coping and Self-Care Strategies You can ease the symptoms of PAWS with steady self-care. Sleep hygiene, eating well, and some daily movement can really help keep your mood and energy somewhat level. Relaxation techniques such as deep breathing, mindfulness, and yoga can lower anxiety. A daily routine helps your body clock and improves your chances of recovery. ### Relapse Prevention Techniques Relapse prevention starts with learning to spot early warning signs. Writing out a relapse prevention plan adds some guardrails when things become difficult. Medication may also help. Acamprosate and carbamazepine, for example, might help with cravings and mood swings. ### Support Services Groups like Alcoholics Anonymous (AA) offer support, a sense of belonging, and some accountability. Showing up to meetings helps keep you grounded. Professional aftercare might mean therapy check-ins, medication monitoring, or relapse prevention workshops. Staying connected to these services gives you structure and helps you manage difficult moments due to Post-Acute Withdrawal Syndrome. 10 Signs You Need to Go to Rehab Last reviewed 2026-07-25. Next review 2027-07-25. ### Treating addiction takes more than willpower Three structured group sessions a day, individual therapy, and a seventeen module curriculum. Admission usually within days of the assessment. [See how admission works](/admissions/) [+44 1202 653136](tel:+441202653136) ## Questions people actually ask What are the common symptoms associated with prolonged withdrawal? You might deal with mood swings, anxiety, low energy, trouble focusing, and sleep problems. Irritability, depression, or just feeling emotionally flat are also common. These are all signs your brain's still adjusting to sobriety. How long does the post-acute phase of withdrawal typically last? It can last months or even years. Symptoms usually come and go in waves. PAWS is temporary, and things tend to ease as your brain chemistry settles and your coping skills get stronger. Are there any specific treatments recommended for managing extended withdrawal symptoms? Treatment often means therapy, meds if needed, and structured support. CBT is a staple for managing anxiety and negative thinking. Medical pros might recommend ongoing aftercare or peer groups. Can lifestyle changes impact the severity or duration of post-acute withdrawal symptoms? Absolutely. Regular exercise, decent meals, and good sleep habits can take the edge off fatigue and mood swings. Mindfulness, relaxation techniques, and routines help too. What are the potential risks of not addressing symptoms of protracted withdrawal? If you ignore symptoms, you're more likely to relapse or end up with worse mental health, such as depression or anxiety. It can also affect your focus, relationships, and motivation. Getting help early can save you a lot of grief and keep things moving forward. How can one differentiate between post-acute withdrawal symptoms and other mental health conditions? PAWS symptoms usually show up pretty soon after someone stops using a substance. They tend to fade, though not always as quickly as you'd hope. On the other hand, conditions like generalized anxiety or depression might persist or worsen if you don't seek treatment. When does PAWS usually start? PAWS usually begins about 7 to 14 days after the worst of the acute withdrawal fades. It typically peaks in the first few months, especially with opioids and benzodiazepines. Symptoms are rarely steady. They surge and fade, sometimes triggered by stress, poor sleep or emotional upheaval, so one day can feel relatively normal and the next much harder. Which substances are most associated with PAWS? It is most common in people recovering from alcohol, opioids, benzodiazepines or stimulants. Alcohol withdrawal often brings mood swings and sleep problems. Benzodiazepine withdrawal can bring lingering anxiety, panic attacks, muscle pain or tremors, cognitive fog and heightened sensitivity to light or sound. Opioid recovery often involves fatigue, cravings and depression. Cannabis and some antidepressants can also trigger it. Who is more likely to experience PAWS? Anyone recovering from chronic substance use can experience it, but the risk increases if you used for a long time or in large amounts. A history of mental health difficulties such as depression or anxiety may make it more likely. Using more than one substance can increase both the risk and the length of post-acute symptoms. How do I lower my relapse risk while dealing with PAWS? Cravings during PAWS can be intense, particularly when you are stressed, tired or feeling low, and the unpredictability makes you more vulnerable to relapse. Managing stress, focusing on self-care and building supportive relationships all help. Learning to spot early warning signs and writing out a relapse prevention plan gives you some guardrails for the harder days. What treatment helps with PAWS? Structured treatment addresses both the physical and mental sides of lingering withdrawal, with medical supervision to keep you safe. Cognitive behavioural therapy helps you spot triggers, challenge negative thoughts and build better ways to cope, while group and family therapy add accountability and support. Sleep hygiene, eating well, daily movement and relaxation techniques such as breathing or mindfulness also help. + ## Talk to a clinician today You will speak to our admissions team, English-speaking clinicians who know the programme and the people in it. Callback within 24 hours. 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