Hippocrates believed many illnesses were related to changes in the weather. There are several disorders that are very sensitive to weather changes including osteoarthritis, tension headaches, back pain, and fibromyalgia. The research suggest that the culprit is lowered atmospheric barometric pressure that precedes storms. The expansion of fluid within inflamed joints following weather changes can cause stretching of the tissues that make the capsule and irritate the nerve endings around the joint causes pain. This expansion of fluid happens on a very small scale and has not yet been quantified by scientific means.
Originally published in Dynamicchiropractic by Linsay Way, DC
Int J Biometeorol, 2011 May; 55(3):319-26
J Spinal Disord Tech, 2002 Aug 15(4) 290-3
Am J Med, 2007 May; 120(5);429-34