Humaworm works well against skin parasites, so hopefully it will help you, too. I'm thinking that it will be helpful because it cured me of a difficult skin yeast infection that I had for six months. By the way, skin yeast also has the biting feeling that I've read about on the morgellon's support forum. With a skin yeast infection, the biting sensation is caused by the yeast putting down roots on the skin. The biting feeling can occur even if there's no visible sign of yeast on the skin where the biting feeling occurs. Eventually, however, as yeast colonies grow, the skin yeast does become very visible as it forms itchy lesions. If the yeast is in the intestines, the biting is what causes leaky gut. Since the biting sensation from a skin yeast infection is similar to the biting sensation with morgellon's disease, I've often wondered if morgellon's is somehow related to yeast or a yeast-like parasite. I'm only conjecturing, though. If it is a yeast-like parasite, however, Humaworm will hopefully be as helpful to you as it was to me.
Good luck, and please keep us posted as to your progress.