Yeah it's a pain in the neck, actually. Docs in USA are REALLY reluctant to touch the parasites with a 10ft pole and it's admitted 80% or more stool samples give false negatives. I just ordered the meds from a site in India and it was damn expensive, but damn worth it because if there was any doubt in my mind something was wrong with me & seemed like parasites, that doubt is gone. Unfortunately, u have to do a few cycles of the meds - 2 weeks on, one off, two on, one off again - for a total of 3 cycles and I was still such a skeptic, I only ordered one cycle. I have some docs in my family I thought would support me & get me scripts if I showed them my pictures, but sadly they're as scared as every other doctor I've seen. They just beg me to go to Mexico or BRASIL and one guy even said to just order more from India! If u are in Britain I have heard of pharmacies there online that u can get the stuff from.
A really good interview I don't have yhe link for at the moment is "dr Klinghardt and dr mercola" talking about Lyme disease. You can google it & listen to the 45min thing or I just downloaded transcript and read it.
Also if you do a user search on here, there's a guy named scabdraggr & he's been thru it all and has some over the counter horse paste/tractor supply protocols I've heard good things about on here & a family member has followed his advice and found relief.