What causes foot pain??
When fibromyalgia affects the lower part of the body, this is somewhat different than upper body pain due to the weight bearing nature of both legs and feet. Although this is just one area of the body affected, I rarely meet a person with fibromyalgia who does not have some kind of leg or foot pain. Fibromyalgia foot pain can be exacerbated by multiple trigger points in the lower body, overactive nerves and even ongoing weakness in the legs, knees and ankles.
In a 2016 study published in pain medicine, researchers say that pushing on trigger points reproduced foot pain in participants.
It is also possible that, for some of us, foot pain is caused purely by fibromyalgia. Our nerves are highly sensitive and few areas take a beating like our feet. It stands to reason that they could hurt just because the nerves get riled up.
Also in 2016, the journal foot published a study suggesting that the subtalar joint, which is just below the ankle, is frequently dysfunctional in fibromyalgia. Out of 20 women who participated, 12 had hypermobility (excessive range of motion) in that joint; while 5 had hypomobility (limited range of motion)
