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Headaches| Hot weather| Air Pollution

Posted Apr 12 2009 11:16pm

Sunday, April 12, 2009 

A recent research shows that hot weather can give you a headache. On the other hand, air pollution appeared to have no effect on headache in a large, long-term case-crossover study.   Low barometric pressure was also linked to the risk of headache, but only for nonmigraine pain.  Mukamal KJ, et al "Weather and air pollution as triggers of severe headaches" Neurology 2009; 72: 922-927.

Here’s an article with an opposing view that showed that air pollution is associated with an increase in the number of emergency department visits for headache.

This studyinvolved 10,497 emergency department visits for headache that occurred at a Montreal hospital between 1997 and 2002 to examine the associations between visits for headache and selected meteorological and air pollution factors.   

Statistically significant positive associations were observed between the number of emergency department visits for headache (ICD-9: 784) and the atmospheric pressure for all and for female visits for 1-day and 2-day lagged exposures. The percentage increase in daily ED female visits was 4.1%, 3.4%, and 2.2% for current day, 1-day and 2-day lagged exposure to SO(2), respectively, for an increase of an interquartile range (IQR) of 2.4 ppb.

The percentage increase was also statistically significant for current day and 1-day lagged exposure to NO(2) and CO for all and for female visits. Presented findings provide support for the hypothesis that emergency department visits for headache are correlated to weather conditions and ambient air pollution - to atmospheric pressure and exposure to SO(2), NO(2), CO, and PM(2.5).

An increase in levels of these factors is associated with an increase in the number of emergency department visits for headache. Szyszkowicz M: Air pollution and daily emergency department visits for headache in Montreal, Canada. Headache. 48(3):417-23, 2008 Mar.  

www.stopmusclepain

Air Pollution, headaches, Hot weather, pain
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