I got that there are Coxackie B, Adenovirus involved. The source I found also mentioned Parvovirus B19, HSV6 Hodgkins. so I thought I'd toss this up here too. I've also been noticing my left arm falls asleep easily when I prop my head up and lay on my left side, and when I was running the last week I noticed when I stopped and walked, I could feel pumping actions as if my heart was pumping blood through arteries, the blood was getting to veins, and then having to push past something blocking the veinous return. Very weird feeling to have, mostly in my hind thighs and triceps. Finger says roundworms, leading to predisposition to what happened when viruses got too much a foothold.