Hi Kathy,
Coincidentally, I too am married to a farmer in UK. When we married (1971) & for 4 yrs prior I was exposed to organo-phosphates (sheep dip, pesticides etc) & so was my husband. The difference being that his exposure was progressive over time being brought up on the farm whereas I come from a city (Manchester) & got most of mine in large doses over a short time. DEFRA, the government body i/c UK rural affairs, has aknowledged that my PD is likely to have been caused by this - there is no family history. As it happens I am voluntary coordinator for Farmers' Markets which major on organic food.
I tried alternative treatments for 2 yrs & now have found a happy medium between conventional & complementary. I recommend 5 Element Chinese Acupuncture from my own experience & medical acupuncture for pain relief. They don't suit everyone - you have to be receptive.
Angela.