Chronic cough in adult patients-evidence-based approach

Abstract

Approximately 10% of the population suffer from acough lasting longer than 8weeks. Compared to acute cough, which usually occurs in the context of banal respiratory tract infections, the differential diagnoses of chronic cough require an increased use of diagnostic tests and thus astructured, evidence-based approach according to current international guidelines. Atargeted history (smoking status, medication, previous diseases) and ENT status are always followed by chest x‑ray and pulmonary function tests before extended diagnostics. In the case of angiotensin-converting enzyme (ACE) inhibitor use and unremarkable physical examination, adrug discontinuation test can be carried out first. In case of inconspicuous findings, adisease entity that can be treated empirically such as upper airway cough syndrome is most likely. If the cough remains unexplained, cough suppression techniques, physiotherapy or speech therapy should be sought before off-label-use of medication.