Thanks for the update. Glad you aren't sleeping in sand anymore.
The Doxy was the answer for me also. I still have them bad but no sand. If I sit with a heating pad set on high against my back they just poor out of my skin. They hate heat. If I could tolerate the heat I would sit in a hot bath tub.
One article I read said you may have to take Doxy for up to 6 months. I think you have to take it every 3 months for the rest of your life.
Apparently the dwarf tape worm is very hard to kill. Just when I think I have gotten them all I have one come through my perineum.
You tube has a video of this guy that complained about bloating and being constantly hungry. (My symptoms) They operated and just cut open his colon and squeezed out hundreds of worms. OMG! I will never mentally recover from this horror even if I get most of the parasites out.
Keep us updated. Even little notes may help someone.