I have had the same symptom that came with fibromyalgia. I used to be a long distance hiker and had an excellent heart. I wore the 7 day Holter monitor and my cardiologist diagnosed POTS (post orthostatic tachycardia syndrome). I now keep my salt levels high and wear compression socks. It’s worse when flared. Heat exacerbates it tremendously. My cardiologist explained that it happens when nerves can no longer constrict the blood vessels so that the blood simply follows gravity—so I would say it’s absolutely related. When the head doesn’t have enough blood the heart works hard to recirculate it. When it’s bad, lying down with legs and arms up helps, but cold showers help me recover the quickest.

i did. fibromyalgia affects the heart as it a MUSCLE. I found also it was too much Magnesium, try getting off that ? it can also be anxiety, which I also had. takinf anti- anxiety meds now - doesnt happen anymore.

I do. It only does this when I'm hurting. Even getting off the couch makes it do this. It makes me very lightheaded when this happens. I also have strange fast beats that are so strong you can see my heart pounding. It will stop and triple beat again. It's really bad when I'm pregnant. Still don't know why it does this.

Thank you both so much for your extremely helpful information. I’ll definitely mention this at my next visit. It’s just so frustrating to have new symptoms coming up and not getting answers.

Thank you for adding this VeraBalogh❤️