The aim of this study was to examine the association and changes over time between headaches with or without somatic pain and the self-reported use of pain medication. The study further examined whether the law amendment in 2003 in Norway releasing the sale of non-prescription drugs to shops has changed these relationships.The study is based on repeated self-report cross sectional studies from 1998 to 2012 in Norway. A total of 27,247 adults were included. As expected, there was a strong association between headache, especially headache with co-morbid somatic pain and consumption of prescription vs.
from The Journal of Pain http://ift.tt/1MHDu4Z
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