LDI = Low Dose Immunotherapy - it's quite new here in US and Canada as a treatment for Lyme..but may have been around for years in Europe.
I am in contact with someone who is getting treatments from a ND. She has treated Lyme and co's for a few years and has one symptom left - she gets red patches on her upper legs when she goes off her medication (I think it's also painful). She was told it was perhaps an auto immune reaction.
I think there are a few forum members trying it.
I googled it - here's the link to some information:
www.wellsphere.com/lyme-disease-article/ldi-immunotherapy-for-lyme/2151631