It never bothered me until I got into a shedload of it when clearing out a pine grove back in 2001. Manged to get into again a couple of more times, and each time it was worse. I found that Zanfel worked wonders, but at $45.00 for a tube, a small one at that, it is pricey. Still worth every penny to me.
After hurricane Katrina I got into it severely, and was blistered from head to toe. No Zanfel. Bathing in a half gallon of water each day. No running water or power. Had to keep cleaning up and moving forward, despite the misery. I won't soon forget that.
What I can tell you is that after showering, if you hit the blisters with a blow dryer it is the best feeling in the world, nothing short of orgasmic. Like scratching it, but much, much better feeling. The problem is that doing this stimulates the blood flow in the area, which serves to spread it.
That stuff is ****.
Big Al