@stevenson Have you seen a neurologist or a dermatologist - I imagine you have. When I had poison oak the only thing that gave me relief was a hot shower. I gradually made the water hotter until I thought I must have emptied the water heater. Does he usually continue his exercise until he breaks a sweat? Has his doctor suggested an antihistamine that isn't drowsying? I take Claritin in the morning for that reason.

Jim

I know you said you eat clean, but does your husband drink coffee, caffeinated sodas or take supplements with caffeine? The reason I ask is because the exact thing used to happen to me while running or exercising hard. I would sweat, then break out in hives all over my body and they itched like crazy!!! Just as you thought, I also thought it was because of sweat toxins making contact with my skin.
However, no matter how clean I ate and how many cleanses I did it still happened. So then I decided no more caffeine. Which made me very sad because I loved drinking Diet Coke. But I stopped and have never had that problem again.
Just a thought, as different things work for different people because all our bodies are different. So if he does have caffeine he should give it a try to see if that helps.

Hello, were you ever able to figure this out? I also have the symptoms of needles on various places, especially head and face when I work out. Common denominator we have is I also have Veteran Affairs Health care, and they have no clue either. I also experienced hard time taking full breath, chest pains. Does he experience any other symptoms as well? Thanks, and best of luck tracking down the cause.

Similar story here. I'm 63 and have been on gel testosterone therapy for a few years. Several years ago I would get these pins & needles plus flushing in my upper torso & neck. Then it progressed into staying hot, even when the home temp was 63: tank top, shorts, flip flops. Had my testosterone checked and I was below 200. So, T therapy began at 50 mg of gel each morning. For about a year, that seemed to do the trick, no more pins & needles & my T went up to about 300. Went for urology checkup & T was measured again, and it remained the same but was advised to try to get my T above 500. So, my daily dose was doubled. I walk every day, between 4-5 miles. As some have mentioned, at about the 30 min mark, here come those pins & needles again with the flushing. Only lasts maybe 10 minutes but I walk through it and it goes away. BTW, I don't sweat though...just get a little warm. Also am dealing with stenosis & DDD at 2 levels in cervical spine. At least with me, I'm not so sure that it is only a low T issue. Still investigating. I wish you folks well; it's no fun.

@stevenson I hope this will help you. I have suffered from this for many years. I do not get actual hives...just the pins ands needles like your husband. When it comes up - could also be a stressful moment...or walking and getting very warm suddenly...or doing the last 3 reps on a weight machine. For me it really only comes up in the winter.

Because it was so uncomfortable I rarely battled through it because it was so uncomfortable. It would almost come up sometimes in a rush and be gone.

I FINALLY got relief by SWEATING in a steam room. The dry heat in the sauna was way too painful. I joined a local Gold's Gym for a week. Day one worked out...it came up...went to the steam room for 15 minutes. That was the most I have sweated in a long time. I took a long shower as cold as I could stand it.
Day two went too play pickle ball for 90 minutes AND it did NOT come up. Next day on the treadmill for 30 minutes at 4.0 and worked out. NEVER came up. I worked out 4 times with 4 12-15 steams and really sweated with the cold shower. It has not come back. It has been 8 days. I am going back to Planet Fitness - (no steam room) to see what happens. I hope that helps you and anyone else. For me it is a miracle.