Thunderstorm asthma explained

Thunderstorm asthma (also referred to in the media as thunder fever or a pollen bomb[1]) is the triggering of an asthma attack by environmental conditions directly caused by a local thunderstorm. Due to the acute nature of the onset and wide exposure of local populations to the same triggering conditions, severe epidemic thunderstorm asthma events can put significant and unmanageable stress on public health facilities.

Widely recognised but not fully understood, it has been proposed that during a thunderstorm, pollen grains can absorb moisture and then burst into much smaller fragments with these fragments being easily dispersed by wind.[2] [3] While larger pollen grains are usually filtered by hairs in the nose, the smaller pollen fragments are able to pass through and enter the lungs, triggering the asthma attack.[4] [5] [6] [7]

History

The phenomenon of thunderstorm asthma has been recognised since the 1980s, with an event in Birmingham, England, in July 1983 often considered the first prominent example.[8] A 2013 study which reviewed instances of abnormally high asthma-related admissions to emergency departments between 1983 and 2013 identified strong correlation between those instances and thunderstorms, while noting that such events were so rare that very little detailed research into the phenomenon had occurred.[9]

A significant impetus in the study of the phenomenon occurred after an event in November 2016 in Melbourne, Australia. Recognised as the most severe epidemic thunderstorm asthma event on record, the onset overwhelmed the city's ambulance system and some local hospitals, saw a ten-fold increase in asthma cases presenting to emergency departments compared with average, and resulted in ten deaths.[10] [11] [12] [13] [14] [15] One month later, an epidemic thunderstorm asthma event in Kuwait resulted in at least 5 deaths and many admissions to the ICU.[16] [17]

Since then there have been further reports of epidemic thunderstorm asthma events in Wagga Wagga, Australia; London, England; Naples, Italy;[18] Atlanta, United States;[19] and Ahvaz, Iran.[20]

Statistics

Many of those affected during a thunderstorm asthma outbreak may have never experienced an asthma attack before.[21]

It has been found 95% of those that were affected by thunderstorm asthma had a history of hayfever, and 96% of those people had tested positive to grass pollen allergies, particularly rye grass.[22] A rye grass pollen grain can hold up to 700 tiny starch granules, measuring 0.6 to 2.5 μm, small enough to reach the lower airways in the lung.[23] [24] [25]

Prevention

Patients with a history of grass allergies should be tested for asthma and treated for the grass allergies and asthma if also present. Patients with known asthma should be treated and counseled on the importance of adherence to preventative medication protocols.[26] Preventative treatment found useful for severe asthma includes Allergen immunotherapy (AIT) particularly sublingual immunotherapy (SLIT).[27]

Significant events

Notes and References

  1. Web site: A change in the pollen season – but is it worse than normal? . UK Met Office . 20 July 2022 . en . 10 June 2022.
  2. News: Sample . Ian . November 25, 2016 . Thunderstorm asthma: how seasonal weather can affect human health . . December 11, 2022.
  3. Web site: thunderstorm asthma - PubMed - NCBI. pubmeddev. www.ncbi.nlm.nih.gov. en. 2019-08-27.
  4. Suphioglu C. Thunderstorm Asthma Due to Grass Pollen. Int Arch Allergy Immunol 1998;116:253–260.
  5. Taylor, P.E. & Jonsson, H. Thunderstorm asthma. Curr Allergy Asthma Rep (2004) 4: 409.
  6. Dabrera G, Murray V, Emberlin J, Ayres JG, Collier C, Clewlow Y, Sachon P. Thunderstorm asthma: an overview of the evidence base and implications for public health advice. QJM. 2013 Mar;106(3):207-17. .
  7. D'Amato G, Vitale C, D'Amato M, Cecchi L, Liccardi G, Molino A, Vatrella A, Sanduzzi A, Maesano C, Annesi-Maesano I. Thunderstorm-related asthma: what happens and why. Clin Exp Allergy. 2016 Mar;46(3):390-6. .
  8. Packe. G. E.. Ayres. JonG.. Asthma Outbreak During a Thunderstorm. 1985-07-27. The Lancet. Originally published as Volume 2, Issue 8448. en. 326. 8448. 199–204. 10.1016/S0140-6736(85)91510-7. 2862383. 22213257. 0140-6736.
  9. Dabrera. G.. Murray. V.. Emberlin. J.. Ayres. J. G.. Collier. C.. Clewlow. Y.. Sachon. P.. 2013-03-01. Thunderstorm asthma: an overview of the evidence base and implications for public health advice. QJM: An International Journal of Medicine. en. 106. 3. 207–217. 10.1093/qjmed/hcs234. 23275386. 1460-2725. free.
  10. Thien. F.. Beggs. P. J.. Csutoros. S.. Darvall. J.. Hew. M.. Davies. J. M.. 2018-06-01. The Melbourne epidemic thunderstorm asthma event 2016: an investigation of environmental triggers, effect on health services, and patient risk factors. The Lancet. en. 2. 6. 255–263. 10.1016/S2542-5196(18)30120-7 . 29880157 . 10536/DRO/DU:30113260. free.
  11. Web site: 'Thunderstorm asthma': Three people remain critical, at least four dead. Wright. Patrick. 24 November 2016. ABC Online. 24 November 2016.
  12. http://www.abc.net.au/news/2016-11-23/thunderstorm-asthma-student-days-away-from-graduating/8048894 "'Thunderstorm asthma': Four people now believed dead, could have been more, minister says"
  13. News: Sixth person dies from thunderstorm asthma emergency. 2016-11-27. ABC News. en-AU. 2016-11-27.
  14. Web site: 'Thunderstorm asthma' deaths in Melbourne rise to nine. 29 November 2016. BBC Online. 29 November 2016.
  15. News: Thunderstorm asthma: Ninth death in Victoria after freak weather event in 2016. 25 January 2017. ABC News. 25 January 2017.
  16. http://gdnonline.com/details.html?id=147475 Five expats die of asthma as rain lashes Kuwait. Gulf Digital News, 2016
  17. Web site: KUNA: Five people die in 2 days due to asthma attacks - health official. December 2, 2016. kuna.net.kw. 8 December 2016.
  18. D'Amato, G., Liccardi, G. and Frenguelli, G. (2007), Thunderstorm-asthma and pollen allergy. Allergy, 62: 11–16.
  19. Grundstein A, Sarnat SE, Klein M, Shepherd M, Naeher L, Mote T, Tolbert P. Thunderstorm associated asthma in Atlanta, Georgia. Thorax. 2008 Jul;63(7):659-60. .
  20. Forouzan A, Masoumi K, Haddadzadeh Shoushtari M, Idani E, Tirandaz F, Feli M, Assarehzadegan MA, Asgari Darian A. An overview of thunderstorm-associated asthma outbreak in southwest of Iran. J Environ Public Health. 2014;2014:504017. .
  21. News: 'Thunder asthma:' Deadly illness caused by freak weather. Reed Alexander . James Griffiths . November 23, 2016. November 23, 2016. CNN.
  22. News: What is thunderstorm asthma? - ABC News (Australian Broadcasting Corporation) . ABC News . 21 November 2016. 2016-11-23.
  23. Web site: Peter Dockrill . Thunderstorm asthma is a real thing that's killed 2 people in Australia . ScienceAlert.com . 2015-08-21 . 2016-11-23.
  24. D'Amato G, Annesi Maesano I, Molino A, Vitale C, D'Amato M. Thunderstorm-related asthma attacks.J Allergy Clin Immunol. 2017 Jun;139(6):1786-1787. .
  25. Web site: Thunderstorm asthma. 2016. ASCIA - Australasian Society of Clinical Immunology and Allergy. 2017-12-12.
  26. Harun . Nur-Shirin . Lachapelle . Philippe . Douglass . Jo . Jo Douglass . 2019 . Thunderstorm-triggered asthma: what we know so far . Journal of Asthma and Allergy . 12 . 101–108 . 10.2147/JAA.S175155 . 1178-6965 . 6512777 . 31190900 . free.
  27. Lombardi. Carlo. Savi. Eleonora. Ridolo. Erminia. Passalacqua. Giovanni. Canonica. Giorgio Walter. 2017. Is allergic sensitization relevant in severe asthma? Which allergens may be culprit?. The World Allergy Organization Journal. 10. 1. 2. 10.1186/s40413-016-0138-8. 1939-4551. 5219672. 28101292 . free .

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