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Chronic cough in adults

CHEST-based classification, red-flag screening, common-cause evaluation, sequential management and referral for cough lasting more than eight weeks.

JurisdictionUnited States
Source check2026-08-20
Clinical reviewiatroX editorial team 路 Clinical editorial review 路 reviewed 2026-08-20 路 due 2027-08-20
AudienceUnited States healthcare professionals
This is an iatroX educational summary of named United States sources, not an official guideline. It does not replace the complete source documents, local policy, specialist advice or clinical judgement. Use the named authority, current FDA labeling, applicable state law, payer rules and local protocol where relevant.

Scope of this summary

Adults with cough lasting longer than eight weeks. CHEST classifies acute, subacute and chronic cough separately; this page does not replace disease-specific guidance for lung cancer, tuberculosis, interstitial lung disease, bronchiectasis, asthma or acute respiratory deterioration.
sources for this section:CHEST cough 2017

The Bottom Line

  • Confirm duration and screen immediately for red flags, environmental or occupational exposure and epidemiologic risk; the chronic-cough algorithm is unsafe if serious disease is not considered first.
  • Review medicines that can cause cough, especially an angiotensin-converting-enzyme inhibitor and the less commonly recognized association with sitagliptin, and plan an appropriate monitored substitution when indicated.
  • Obtain a chest radiograph and structure the initial evaluation around clinical findings rather than ordering every advanced test at once.
  • Evaluate and treat common causes such as upper-airway cough syndrome, asthma or eosinophilic bronchitis and reflux-cough syndrome in a sequential and sometimes additive manner.
  • Measure cough severity or quality-of-life impact and reassess within four to six weeks; unexplained or refractory cough warrants specialist evaluation rather than indefinite empiric prescribing.
sources for this section:CHEST cough 2017

Practical clinical workflow

1
Document onset, duration, sputum, hemoptysis, breathlessness, systemic symptoms, smoking or vaping, work and home exposures, infection risk, meals, posture, voice and medication timing.
2
Perform cardiopulmonary and upper-airway examination, obtain chest radiography, and use spirometry or other targeted tests when asthma, obstruction or another diagnosis is plausible.
3
Address an identified drug or exposure and choose one evidence-linked common-cause intervention at a time when feasible, recording what response would support or weaken that hypothesis.
4
For suspected reflux-cough syndrome, assess typical reflux symptoms and lifestyle contributors; do not assume acid suppression alone will resolve cough in every patient.
5
Reassess objectively in four to six weeks and refer for pulmonary, otolaryngology or multidisciplinary cough evaluation when imaging is abnormal, the diagnosis remains uncertain or cough persists despite a coherent work-up.
sources for this section:CHEST cough 2017

Safety boundaries and escalation

  • Hemoptysis, hypoxemia, severe dyspnea, chest pain, fever with systemic toxicity, major weight loss, a new focal examination finding or rapidly progressive symptoms requires urgent assessment.
  • Consider tuberculosis and endemic fungal disease from exposure and geography, and use the applicable public-health and infection-control pathway rather than routine empiric cough treatment.
  • Do not repeatedly prescribe antibiotic, systemic corticosteroid, opioid antitussive or proton-pump inhibitor without a supported indication and a defined reassessment plan.
  • Neuromodulator or speech-pathology treatment for refractory unexplained chronic cough requires its dedicated evidence, contraindication and monitoring review; it is not inferred from the classification guideline alone.
sources for this section:CHEST cough 2017

Localization

CHEST uses an adult chronic-cough threshold of more than eight weeks and a US-oriented algorithm. Local tuberculosis and endemic-mycosis prevalence, state reporting duties and specialist access matter.
sources for this section:CHEST cough 2017

Source documents

Use the linked source documents for complete recommendations, evidence grading, exclusions and implementation detail.

  1. American College of Chest PhysiciansClassification of Cough as a Symptom in Adults and Management Algorithms: CHEST Guideline and Expert Panel ReportDOI 10.1016/j.chest.2017.10.016 路 published 2017-10-25 路 accessed 2026-08-20
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