Carols by glow sticks: a retrospective analysis of Poisons Information Centre data

Rose Cairns, Jared A Brown, Andrew H Dawson, Wendy Davis and Nicholas A Buckley
Med J Aust 2018; 209 (11): . || doi: 10.5694/mja18.01032
Published online: 10 December 2018


Objective: To win a Christmas hamper. We also devised a study of our most festive seasonal poisoning, to demonstrate how hard we are working while everyone else is partying.

Design: Retrospective analysis of the New South Wales Poisons Information Centre database, which we searched for exposures to the substance code “Cyalume light sticks/glow toys” from 1 July 2013 to 30 June 2017.

Setting: A dimly lit basement with a constantly ringing phone. At the other end of the phone was a highly anxious parent and a luminescent child.

Main outcome measures: Number of glow stick exposures, route of exposures, patient demographics and seasonal trends in exposures.

Results: There were 2918 glow stick exposures over the 4-year study period. The vast majority of exposures (94%) were in children aged 14 years and younger. Medical complications were very rare. Glow stick exposures were 4.38 times more likely in December (95% CI, 3.02–6.35; P < 0.001). Statistically significant increases were also observed in October, November, January, February and March. Glow stick exposures were 4.20 times more likely during the holiday period of 1 December to 7 January (95% CI, 3.42–5.15; P < 0.001), 2.52 times more likely over summer (95% CI, 2.12–3.00; P < 0.001), and 1.77 times more likely during school holidays (95% CI, 1.47–2.13; P < 0.001).

Conclusions: This epidemic of poisoning is perhaps due to mass seasonal synaesthesia. The lack of any significant adverse consequences highlights the contribution that 50 years of injury prevention has made to everyone having a Merry Christmas and a Happy New Year.

  • 1 NSW Poisons Information Centre, The Children's Hospital at Westmead, Sydney, NSW
  • 2 University of Sydney, Sydney, NSW
  • 3 National Poisons Register, Royal Prince Alfred Hospital, Sydney, NSW


We thank Genevieve Adamo for providing the glow stick photograph. We also thank staff at the NSWPIC for taking calls and recording the data, especially over the busy Christmas break.

Competing interests:

No relevant disclosures.

  • 1. Yousef JM. Identifying frankincense impact by biochemical analysis and histological examination on rats. Saudi J Biol Sci 2011; 18: 189-194.
  • 2. Huynh A, Cairns R, Brown JA, et al. Patterns of poisoning exposure at different ages: the 2015 annual report of the Australian Poisons Information Centres. Med J Aust 2018; 209: 74-79 <MJA full text>
  • 3. Haus E, Smolensky M. Biological clocks and shift work: Circadian dysregulation and potential long-term effects. Cancer Causes Control 2006; 17: 489-500.
  • 4. Buckley NA, Whyte IM, Dawson AH. There are days ... and moons. Self-poisoning is not lunacy. Med J Aust 1993; 159: 786-789.
  • 5. Buckley NA, Dawson AH, Whyte IM. There are days ... and moons ... and public holidays. Self-poisoning is not lunacy [letter]. Med J Aust 1994; 161: 728.
  • 6. Cairns R, Brown J, Buckley N. The impact of codeine re-scheduling on misuse: a retrospective review of calls to Australia’s largest poisons centre. Addiction 2016; 111: 1848-1853.
  • 7. Bellia L, Bisegna F, Spada G. Lighting in indoor environments: visual and non-visual effects of light sources with different spectral power distributions. Build Environ 2011; 46: 1984-1992.
  • 8. Chu AF, Marcus SM, Ruck B. Poison control centers’ role in glow product-related outbreak detection: implications for comprehensive surveillance system. Prehosp Disaster Med 2009; 24: 68-72.
  • 9. Keys N, Erickson T, Lipscomb J. Glow compound exposure [abstract]. J Toxicol Clin Toxicol 1995; 33: 448.
  • 10. Hoffman RJ, Nelson LS, Hoffman RS. Pediatric and young adult exposure to chemiluminescent glow sticks. Arch Pediatr Adolesc Med 2002; 156: 901-904.
  • 11. Danish Environmental Protection Agency. Survey and health assessment of glow sticks. Copenhagen: DEPA, 2013.
  • 12. Mowry A, Spyker D, Brooks D, et al. 2015 Annual report of the American Association of Poison Control Centers’ National Poison Data System (NPDS): 33rd annual report. Clin Toxicol 2016; 54: 924-1109.
  • 13. Sathyanarayana S. Phthalates and children’s health. Curr Probl Pediatr Adolesc Health Care 2008; 38: 34-49.
  • 14. Litovitz T, Whitaker N, Clark L, et al. Emerging battery-ingestion hazard: clinical implications. Pediatrics 2010; 125: 1168-1177.
  • 15. Wieczorkiewicz SM, Kassamali Z, Danziger LH. Behind closed doors: medication storage and disposal in the home. Ann Pharmacother 2013; 47: 482-489.
  • 16. Return Unwanted Medicines. (viewed Oct 2018).
  • 17. NSW EPA. Household Chemical CleanOut. (viewed Oct 2018).


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