Mapping the weather patterns affecting people with chronic pain

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Summary: A new study confirms a link between the severity of symptoms for those with chronic pain and atmospheric weather conditions. Low atmospheric pressure was associated with more severe symptoms of pain.

Source: University of Manchester

A new mass study of people living with chronic pain in the UK has demonstrated the links between pain and certain atmospheric weather conditions.

Weather systems in the UK could cause chronic pain suffers to experience more or less pain on certain days as a result of certain pressure patterns and accompanying rain, humidity, and temperature caused by movements in the jet stream, according to new research published in the Bulletin of the American Meteorological Society.

To better characterise which weather conditions most affect pain, a group of University of Manchester–based researchers and their collaborators, funded by Versus Arthritis, conducted a 15-month long study with over 13,000 UK residents living with chronic-pain conditions.

In this study, called “Cloudy With a Chance of Pain,” the participants recorded their daily pain intensity within an app on their smartphones. The GPS location of the phone would then link to the weather data. The team’s previous work used a statistical approach to examining the difference in local weather between days where individuals had an increase in pain over the previous day versus days they did not have such a pain event.

In this new study, the team analysed the data across all of the UK as a meteorologist would do. The researchers ranked all days in the study by the percentage of people responding who recorded a pain event. The most painful days had 23% of participants reporting an increase in pain, and the least painful days had 10% of participants reporting an increase in pain.

The researchers took the 45 days at the top of the ranking (the top 10% of all study days) and averaged the weather conditions on those days to determine the weather patterns present when the most number of people were in pain. They did the same for the 45 days where the least number of people reported pain (bottom 10%).

These research results show for the first time the weather patterns on days with a large number of people reporting pain, compared to days with a low number of people reporting pain. On the most painful days, the jet stream was aimed right at the UK, with below-normal (or low) pressure over the UK. The humidity and precipitation rate were both above normal, and winds were stronger. In contrast, on the least painful days, the jet stream tended to blow north of the UK, bringing above-normal (or high) pressure to the UK. The humidity and precipitation rate were both below normal, and winds were weaker.

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