My grandmother retired to a farm where she used a ton of herbicides and insecticides (endless battle agains fire ants) including DDT and who knows what else. Sh

My grandmother retired to a farm where she used a ton of herbicides and insecticides (endless battle agains fire ants) including DDT and who knows what else. She ended up with a Parkinson’s-like condition - supposedly not Parkinson’s, but same symptoms. I’m not sure how they determined that.