Worldwide survey of chronic cough: A manifestation of enhanced somatosensory response

Morice, Alyn H.; Jakes, Adam D.; Faruqi, Shoaib; Birring, Surinder S.; Mcgarvey, Lorcan; Canning, Brendan; Smith, Jaclyn A.; Parker, Sean M.; Chung, Kian Fan; Lai, Kefang; Pavord, Ian D.; Van Den Berg, Jan; Song, Woo Jung; Millqvist, Eva; Farrell, Michael J.; Mazzone, Stuart B.; Dicpinigaitis, Peter

Abstract

© ERS 2014. 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.

Citation

Morice, A. H., Jakes, A. D., Faruqi, S., Birring, S. S., Mcgarvey, L., Canning, B., Smith, J. A., Parker, S. M., Chung, K. F., Lai, K., Pavord, I. D., Van Den Berg, J., Song, W. J., Millqvist, E., Farrell, M. J., Mazzone, S. B., & Dicpinigaitis, P. (2014). Worldwide survey of chronic cough: A manifestation of enhanced somatosensory response. European respiratory journal, 44(5), 1149-1155. https://doi.org/10.1183/09031936.00217813

• Journal Article Type: Article
• Acceptance Date: Apr 18, 2014
• Online Publication Date: Sep 3, 2014
• Publication Date: Nov 1, 2014
• Deposit Date: May 16, 2022
• Journal: European Respiratory Journal
• Print ISSN: 0903-1936
• Electronic ISSN: 1399-3003
• Publisher: European Respiratory Society
• Peer Reviewed: Peer Reviewed
• Volume: 44
• Issue: 5
• Pages: 1149-1155
• DOI: https://doi.org/10.1183/09031936.00217813
• Public URL: https://hull-repository.worktribe.com/output/3610125