A worldwide survey of chronic cough

a manifestation of enhanced somatosensory response

Chronic Cough Registry

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Reports from individual centres suggest a preponderance of females with chronic cough. Females also have heightened cough reflex sensitivity. Here we have reviewed the age and sex of unselected referrals to 11 cough clinics. To investigate the cause of any observed sex dimorphism, functional magnetic resonance imaging of putative cough centres was analysed in normal volunteers. The demographic profile of consecutive patients presenting with chronic cough was evaluated. Cough challenge with capsaicin was undertaken in normal volunteers to construct a concentration-response curve. Subsequent functional magnetic resonance imaging during repeated inhalation of sub-tussive concentrations of capsaicin observed areas of activation within the brain and differences in the sexes identified. Of the 10,032 patients presenting with chronic cough, two-thirds (6591) were female (mean age 55 years). The patient profile was largely uniform across centres. The most common age for presentation was 60-69 years. The maximum tolerable dose of inhaled capsaicin was lower in females; however, a significantly greater activation of the somatosensory cortex was observed. Patients presenting with chronic cough from diverse racial and geographic backgrounds have a strikingly homogeneous demographic profile, suggesting a distinct clinical entity. The preponderance of females may be explained by sex-related differences in the central processing of cough sensation.

Original languageEnglish (US)
Pages (from-to)1149-1155
Number of pages7
JournalEuropean Respiratory Journal
Volume44
Issue number5
DOIs
StatePublished - Nov 1 2014

Fingerprint

Cough
Capsaicin
Sex Characteristics
Healthy Volunteers
Magnetic Resonance Imaging
Demography
Surveys and Questionnaires
Somatosensory Cortex
Inhalation
Reflex
Referral and Consultation
Brain

ASJC Scopus subject areas

  • Medicine(all)

Cite this

A worldwide survey of chronic cough : a manifestation of enhanced somatosensory response. / Chronic Cough Registry.

In: European Respiratory Journal, Vol. 44, No. 5, 01.11.2014, p. 1149-1155.

Research output: Contribution to journalArticle

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