science

Post-acute-withdrawal syndrome

Post-acute-withdrawal syndrome is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Post-acute-withdrawal syndrome rather than just read about it. In short: Post-acute withdrawal syndrome (PAWS) is the prolonged psychological symptoms following a physical acute withdrawal from many drugs including alcohol, opioids, benzodiazepines, and barbiturates. It is caused by the brain adjusting from being addicted to a certain substance and can last all the way from a few months up to a few years.

Key takeaways

Post-acute-withdrawal syndrome belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Post-acute-withdrawal syndrome to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Post-acute-withdrawal syndrome from memory before moving on to harder problems.

Reference excerpt

Post-acute withdrawal syndrome (PAWS) is the prolonged psychological symptoms following a physical acute withdrawal from many drugs including alcohol, opioids, benzodiazepines, and barbiturates. It is caused by the brain adjusting from being addicted to a certain substance and can last all the way from a few months up to a few years. Infants born to mothers who used these substances during pregnancy may also experience PAWS. The brain can have a hard time adjusting to changes following the physical detoxification from a substance, thus causing many psychological symptoms to occur including prolonged psychosis, anxiety or depression. PAWS can occur with symptoms persisting from months to years after cessation of substance use. In almost all cases drug-induced psychiatric disorders fade away with prolonged abstinence, although permanent damage to the brain and nervous system may be caused by continued substance use.

Signs and symptoms Symptoms can sometimes come and go with wave-like re-occurrences or fluctuations in severity of symptoms. Common symptoms include impaired cognition, irritability, depressed mood, and anxiety, and can lead to relapse. PAWS as a result of benzodiazepines, opioids, and alcohol in particular can produce symptoms identical to generalized anxiety disorder as well as panic disorder. Due to the sometimes prolonged nature and severity of these withdrawals, abrupt sobriety from these substances is not advised. Some symptoms of PAWS include:

Psychosocial dysfunction Anhedonia Depression Impaired interpersonal skills Obsessive-compulsive behaviour Feelings of guilt Autonomic disturbances Pessimistic thoughts Impaired attentional control Lack of initiative Craving Inability to think clearly Memory problems Emotional overreactions or numbness Sleep disturbances Extreme fatigue Physical coordination problems Stress sensitivity Increased sensitivity to pain Panic disorder Psychosis Generalized anxiety disorder Sleep disturbance (dreams of using, behaviors associated with the life style) Mourning (the change in lifestyle) Symptoms occur intermittently, but are not always present. They are made worse by stress or other triggers and may arise at unexpected times and for no apparent reason. They may last for a short while or longer. Any of the following may trigger a temporary return or worsening of the symptoms of PAWS:

Stressful and/or frustrating situations Multitasking Feelings of anxiety, fearfulness or anger Social conflicts Unrealistic expectations of oneself

Post-acute benzodiazepine withdrawal

Disturbances in mental function can persist for several months or years after withdrawal from benzodiazepines. Psychotic depression persisting for more than a year following benzodiazepine withdrawal has been documented in the medical literature. The patient had no prior psychiatric history. The symptoms reported in the patient included, major depressive disorder with psychotic features, including persistent depressed mood, poor concentration, decreased appetite, insomnia, anhedonia, anergia and psychomotor retardation. The patient also experienced paranoid ideation (believing she was being poisoned and persecuted by co-employees), accompanied by sensory hallucinations. Symptoms developed after abrupt withdrawal of chlordiazepoxide and persisted for 14 months. Various psychiatric medications were trialed which were unsuccessful in alleviating the symptomatology. Symptoms were completely relieved by recommending chlordiazepoxide for irritable bowel syndrome 14 months later. Another case report noted a similar phenomenon in a female patient who abruptly reduced her diazepam dosage from 30 mg to 5 mg per day. She developed electric shock sensations, depersonalization, anxiety, dizziness, left temporal lobe EEG spiking activity, hallucinations, visual perceptual and sensory distortions which persisted for years. A clinical trial of patients taking the benzodiazepine alprazolam (Xanax) for eight weeks triggered protracted symptoms of memory deficits which were still present after up to eight weeks post cessation of alprazolam.

Dopamine agonist protracted withdrawal After long-term use of dopamine agonists, a withdrawal syndrome may occur during dose reduction or discontinuation with the following possible side effects: anxiety, panic attacks, dysphoria, depression, agitation, irritability, suicidal ideation, fatigue, orthostatic hypotension, nausea, vomiting, diaphoresis, generalized pain, and drug cravings. For some individuals, these withdrawal symptoms are short-lived and make a full recovery, for others a protracted withdrawal syndrome may occur with withdrawal symptoms persisting for months or years.

Cause The syndrome is caused in part due to persisting physiological adaptations in the central nervous system manifested in the form of continuing but slowly reversible tolerance, disturbances in neurotransmitters and resultant hyperexcitability of neuronal pathways. However, data supports "neuronal and overwhelming cognitive normalization" in regards to chronic methamphetamine use and PAWS. Stressful situations that arise in early recovery may result in the symptoms of post-acute withdrawal syndrome to worsen and should be avoided when necessary. The severity, frequency, and duration of symptoms associated with the condition vary depending on the drug of use.

Treatment The condition gradually improves over a period of time which can range from six months to several years in more severe cases. Flumazenil was found to be effective in reducing feelings of hostility and aggression in patients who had been free of benzodiazepines for 4 to 266 weeks. This may suggest a role for flumazenil in treating protracted benzodiazepine withdrawal symptoms. Acamprosate has also been found to be effective in alleviating some of the post acute withdrawal symptoms of alcohol withdrawal. Carbamazepine or trazodone may also be effective in the treatment of post acute withdrawal syndrome in regards to alcohol use. Cognitive behavioral therapy can also help the post acute withdrawal syndrome especially when cravings are a prominent feature.

See also Alcohol withdrawal syndrome Antidepressant discontinuation syndrome Benzodiazepine withdrawal syndrome Opioid use disorder

References

Worked examples

Example 1 — a first encounter with Post-acute-withdrawal syndrome

Start with the simplest possible case. Write down what Post-acute-withdrawal syndrome claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Post-acute-withdrawal syndrome before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Post-acute-withdrawal syndrome ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Post-acute-withdrawal syndrome

In research: Post-acute-withdrawal syndrome appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Post-acute-withdrawal syndrome in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Post-acute-withdrawal syndrome is common in secondary-school and first-year university syllabi. It links to neighbouring topics Adverse effects of psychoactive drugs, Withdrawal syndromes, so understanding it makes those chapters shorter.
In everyday life: Look for Post-acute-withdrawal syndrome outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Post-acute-withdrawal syndrome in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Post-acute-withdrawal syndrome means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Post-acute-withdrawal syndrome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Post-acute-withdrawal syndrome in simple terms?

Why does Post-acute-withdrawal syndrome matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Post-acute-withdrawal syndrome?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Post-acute-withdrawal syndrome.