ladybird,

Thanks very much for sharing your experience.

I don't have good prevalence statistics for Scotland, so we'll run with yours: 1 in 500 - a prevalence of 200/100,000.

I would analyse your situation as follows. You wouldn't be writing to us unless you or your partner had PD so the probability of you or your partner having PD is 1, not 0.002. You would probably have posted if any near neighbour had PD, perhaps a total of 5, two to the left, your partner and two to the right. This gives a probability of approximately 5 in 500. This leaves us with a final probability of about 1 in 100. (This is called an a posteriori analysis.)

Even with this much higher probability you still have an interesting statistic.

I think there's a good chance that even after PD has been triggered a person's environment can affect their rate of progression.

Do you have any mold or fungal, wet or dry rot, problems with your houses?

I recommend that you see your GP about this.

John