Has anyone found out that a bacterial infection caused their POTS? I had a pilonidal abscess removed 4 months before I started seeing POTS symptoms. The wound was original stitched but ripped open within two weeks. It stayed open for 4 months no improvement at all. Then after my POTS symptoms started I had a doctor put me on antibiotics for 10 days because he thought I had a UTI because of my urine test, which I did not think I had but took it anyway. The wound almost completely heal in that time. After that I end up with another round on antibiotics and it did not heal the wound anymore but seemed to help my tachycardia. The improvement stopped right after I stopped the antibiotics. I was actually able to walk around the house and my heart rate would be in the 90's and 100's it even dipped in the 80's here and there. Now it is back in the 110's and 120's sometimes higher. Any doctor I ask says NO this is not the cause. I have read in multiple places that a bacterial infection can cause POTS.