https://www.cbsnews.com/newyork/news/ticks-lyme-disease-cdc-...
Lots of anecdotal evidence of ALS developing after tick bites, or more concretely infection with Borrelia Burgdorferi.
Probably a genetic component, and other enviromental factors are also involved, but the only dramatic reversals of MND I have seen documented (or heard about) have been either with IV antibiotics [1][3], or years of Mercury chelation [2]
[1] https://invisibledisabilities.org/award-recipients/2011award...
[3] https://pubmed.ncbi.nlm.nih.gov/17212618/
[2] https://www.researchgate.net/publication/317849075_Healing_o...
In the recent book "Chronic" by Dr. Stephen Philips, he's frustrated since he can only treat successfully (outcome similar to Dr. Martz), with antibiotics, about 15% of his ALS-like patients. Considering how uniformly fatal ALS diagnosis is otherwise, even considering how skewed of a sample he might get (patients that already know they are Lyme positive or suspect it), still find it astonishing.