After acute withdrawal ends, some people keep feeling low, anxious, foggy or unable to sleep for weeks or months. Clinicians call this post-acute or protracted withdrawal. It is best documented after alcohol, it is not a formal diagnosis in the DSM, and no authoritative source can tell you how long yours will last. It does ease.
That last sentence is the honest one, and the one most pages skip on their way to a confident-looking chart. This page covers what is known, where the evidence runs out, and what to do meanwhile.
What is post-acute withdrawal syndrome?
Post-acute withdrawal, also called protracted withdrawal, describes symptoms that continue after the acute phase is over. Acute withdrawal is the physically dramatic part: shaking, sweating, nausea, and with alcohol, the risk of seizures and delirium. Post-acute withdrawal is quieter and slower. It is mostly about mood, sleep, thinking and craving.
The clearest description comes from the SAMHSA Advisory on Protracted Withdrawal, published July 2010. It lists the symptoms most consistently reported after alcohol: anxiety, hostility, irritability, depression, mood instability, fatigue, insomnia, difficulty concentrating and thinking clearly, reduced interest in sex, and unexplained physical complaints, especially pain.
The same Advisory is careful about something that matters more than the symptom list. Research on protracted withdrawal, particularly for substances other than alcohol, is limited, and no consensus on the term or its definition exists. So when you read that you “have PAWS,” it means you are experiencing a pattern clinicians have described for decades and have not yet agreed how to define.
Is PAWS a real medical diagnosis?
No, and understanding why is useful rather than discouraging.
The 2010 SAMHSA Advisory states that the Diagnostic and Statistical Manual of Mental Disorders includes no protracted withdrawal diagnosis for any psychoactive substance. No diagnostic code, no agreed symptom threshold, no required duration.
That does not mean nothing is happening to you. Two things are true at once. The symptoms are real, reported consistently, and documented across decades of clinical literature. And the construct grouping them has never been formally validated.
That has a practical consequence. Because no diagnosis is defined, the same symptoms could be protracted withdrawal, a depressive disorder, an anxiety disorder, the aftereffects of a traumatic brain injury, or several overlapping. SAMHSA advises providers to assess for co-occurring disorders and traumatic brain injury, because protracted withdrawal symptoms mimic them. That is the strongest argument for being evaluated by a physician rather than self-diagnosing from a website, including this one.
How long does PAWS last?
Nobody can give you a reliable number. Here is what can be said honestly, in four parts.
First, acute withdrawal does have published timeframes, and they help you work out where you are in the process.
| Substance | Typical acute withdrawal duration | Protracted phase |
|---|---|---|
| Alcohol | 5 to 7 days | No authoritative timeframe published |
| Benzodiazepines | 1 to 4 weeks, or 3 to 5 weeks with tapering | No authoritative timeframe published |
| Cannabis | 5 days | No authoritative timeframe published |
| Nicotine | 2 to 4 weeks | No authoritative timeframe published |
| Opioids | 4 to 10 days, or 14 to 21 days for methadone | No authoritative timeframe published |
| Stimulants | 1 to 2 weeks | No authoritative timeframe published |
Acute durations are reproduced from Exhibit 1 of the SAMHSA Advisory on Protracted Withdrawal, July 2010. The right-hand column is not an omission. That Advisory states explicitly that it does not provide timeframes for protracted withdrawal as it does for acute withdrawal.
Second, that empty column is the honest answer. If the agency publishing the reference document declines to give a range, a treatment website quoting “six months to two years” is not drawing on better evidence. It is drawing on none.
Third, one thing has actually been measured. The largest systematic review of protracted alcohol withdrawal symptoms, in Current Neuropharmacology in 2023, pooled 102 publications. Craving, measured on the Obsessive Compulsive Drinking Scale, fell from 24.2 at baseline to 18.8 at one week, 10.3 at one month, and 9.7 at three months. Most of that decline happens in the first month.
The same review found something less comforting. Daytime sleepiness, on the Epworth Sleepiness Scale, stayed essentially flat at 7.3 to 7.1. It also showed how thin the evidence base is: of 102 publications, 88 were about craving, 21 about sleep, and exactly one about anhedonia.
Fourth, about the “two years” figure everyone quotes. It does come from SAMHSA. But SAMHSA attributes it to anecdotal literature and case studies going back several decades, not to trials. It is a clinical impression, not a measured duration.
What are the symptoms of PAWS?
The 2010 SAMHSA Advisory lists the following as commonly reported protracted withdrawal symptoms:
- Anxiety
- Sleep difficulties
- Short-term memory problems
- Persistent fatigue
- Difficulty concentrating and making decisions
- Cravings
- Impaired executive control
- Anhedonia, meaning a reduced ability to feel pleasure
- Difficulty focusing
- Dysphoria or depression
- Irritability
- Unexplained physical complaints
- Reduced interest in sex
Read that list carefully and you will notice it overlaps almost entirely with the symptom list for major depression. That is not a reason to dismiss what you are feeling. It is a reason to have someone qualified look at it properly.
Does everyone get PAWS after quitting?
No. Not everyone experiences post-acute symptoms at all.
SAMHSA describes three patterns. Some people have none and simply feel steadily better after acute withdrawal ends. Some move directly into a protracted phase. And some feel well for a month or two and then develop symptoms.
That third pattern is worth naming out loud. Feeling fine for six weeks and then sliding into fatigue, irritability and poor sleep is not a relapse and it is not a sign that recovery has failed. It is a documented course.
There is no reliable figure for how many people experience protracted withdrawal, and this page will not print one. The prevalence percentages circulating online do not trace to any verifiable source.
Is PAWS different for alcohol, opioids and benzodiazepines?
The evidence is uneven, so the honest answer varies by substance.
Alcohol is by far the best documented. The symptom pattern above comes largely from alcohol research, and sleep is the most consistently measured element.
Opioids. SAMHSA describes anxiety, depression and sleep disturbance continuing for weeks or months. No endpoint is published.
Benzodiazepines. Symptoms wax and wane, may last for months, and gradually subside. The waxing and waning matters, because a bad week after several good ones does not mean the process restarted.
Cannabis. In the longest study SAMHSA cites, sleep difficulties and unusual dreams persisted at least 45 days. That is a study duration, not a resolution point.
Notice what is absent: a neat table of durations per substance. That is deliberate. The versions circulating online are invented.
Why is sleep still bad months after quitting?
Because sleep architecture takes far longer to recover than most people are told.
The SAMHSA Advisory cites a review of seven polysomnography studies, which measure sleep in a laboratory rather than relying on self-report. Those studies found sleep abnormalities can persist for 1 to 3 years after a person stops drinking, including difficulty falling asleep, decreased total sleep time, and sleep apnea.
The broader literature agrees. Colrain and colleagues, in Handbook of Clinical Neurology in 2014, review how alcohol disrupts the sleeping brain. Koob and Colrain, in Neuropsychopharmacology in 2020, argue that sleep disturbance is not only a consequence of alcohol use disorder but feeds back into it.
So poor sleep at month four is expected. Knowing that protects you, because “I still can’t sleep, so this isn’t working” is a common reason people return to use.
What helps with PAWS?
Less than you would hope, and it is better to know that than to be sold certainty.
The most relevant review is a 2022 scoping review in the Journal of Studies on Alcohol and Drugs on managing post-acute alcohol withdrawal. Sixteen treatment studies met inclusion, and the authors concluded that the strength of evidence for pharmacologic treatments is low. Within that picture:
- Gabapentinoids and anticonvulsants had the most support, still low, for negative mood and sleep symptoms.
- Acamprosate had preliminary data only, with no controlled trials in this setting. It has an established role in alcohol use disorder more broadly, but it is not a treatment for post-acute withdrawal.
- Amitriptyline was limited by problematic outcome measures and side effect burden.
- Melatonin, homatropine and Proproten-100 had no supporting evidence.
None of that is a prescribing recommendation. Whether medication suits you is a decision for a physician who has evaluated you.
Alongside medication, what reliably helps is unglamorous. Regular sleep and wake times. Movement. Staying connected rather than withdrawing. Continuing medication for the underlying substance use disorder if you are on it. And knowing this phase is documented, common, and not permanent.
When should you see a clinician?
Because protracted withdrawal symptoms overlap so heavily with depression, anxiety disorders and the effects of head injury, telling them apart requires a proper evaluation. Persistent low mood, symptoms that worsen rather than ease over months, or symptoms interfering with work and relationships all warrant a visit.
If you are having thoughts of suicide or self-harm, call or text 988 now. That is the Suicide and Crisis Lifeline, free and available 24 hours a day.
If you are still in the acute phase, or considering stopping alcohol after heavy daily drinking, read the alcohol withdrawal timeline first. Acute alcohol withdrawal can be life threatening.
How does Dr. Vaid help?
Dr. Meenu Vaid, MD is triple board certified, including in addiction medicine, and practices in Morgan Hill. For someone in the post-acute phase, that means:
- Clinical evaluation as part of ongoing substance use disorder care, including assessment for co-occurring conditions that can look like protracted withdrawal.
- Prescribing where appropriate, including medication for alcohol and opioid use disorder such as naltrexone and buprenorphine with naloxone.
- Motivational Interviewing in one-to-one visits.
- Lab orders through an external partner laboratory, reviewed with you directly.
- Detox coordination, only if you need it, arranged with a trusted partner rather than delivered on site.
- Wellness coaching for addiction recovery, which she is certified to provide through the International Coaching Federation.
Savera does not provide detox, inpatient or residential care, emergency care, in-house testing, or group and family therapy. Care is direct pay. Savera does not bill insurance, and HSA and FSA are accepted.
If months have passed and you still do not feel like yourself, that is worth an unhurried conversation. Book a consultation, or read about alcohol addiction treatment.
Frequently asked questions
How long does post-acute withdrawal last? No authoritative source publishes a duration. SAMHSA provides acute withdrawal timeframes but deliberately declines to provide protracted ones, because the research is limited and no agreed definition exists. What is measured is that cravings decline substantially over the first three months.
Is PAWS a recognized diagnosis? No. The Diagnostic and Statistical Manual of Mental Disorders contains no protracted withdrawal diagnosis for any psychoactive substance, per the 2010 SAMHSA Advisory. The symptoms are real and consistently reported. The construct grouping them has not been formally validated.
What are the most common PAWS symptoms? SAMHSA lists anxiety, sleep difficulties, short-term memory problems, persistent fatigue, difficulty concentrating and deciding, cravings, impaired executive control, anhedonia, dysphoria or depression, irritability, unexplained physical complaints, and reduced interest in sex.
Can medication treat PAWS? Evidence for medication is low overall. A 2022 scoping review found the most support, still low certainty, for gabapentinoids and anticonvulsants for mood and sleep symptoms, and no controlled trials for acamprosate in this setting. Whether medication suits you is a decision for a physician who has evaluated you.
If you need help right now
- Medical emergency: call 911.
- Suicide and crisis support: call or text 988.
- SAMHSA National Helpline: 1-800-662-HELP (4357). Free, confidential, 24/7.
Reviewed by Dr. Meenu Vaid, MD Last clinically reviewed on August 5, 2026
This page is for general educational purposes only. It is not medical advice, and reading it does not create a doctor-patient relationship. Do not start, stop or change any treatment based on this page. For emergencies call 911. For crisis support call or text 988. See our full medical disclaimer.
