Zapper works for this. It takes about 1 1/2 weeks to get relief. It could be yeast or a parasite. I wouldn't count on it not being pin worms even if the doctors didn't catch it. They catch a small percentage of actual cases. I think I read under 30% but not sure, it was low. None of the parasite herbs I tried worked but I didn't try Dr. Clarks.
I've zapped till all body itching is gone and I'm planning on keeping at it till I am sure I'm way past reinfection. Months if need be. You may be suprised to feel something wiggling under your skin when using the zapper. I did. Freaky but true. Gone now though, thank God!