Yes we worry - and so far I have had 40 years of worrying - when I was dx'd it was not genetic and/or hereditary - now I see it is - one son knows it's a possibility - the other I doubt has ever thought about it - the thing that I'm seeing is that MS symptoms are a lot like those of Lyme disease and here in the Northeast there's a lot of Lyme which is as hard to dx as is MS - I wonder how many that have Lyme are really MS and vice versa - I always thought my younger son had Lyme from the symptoms he describes - now I'm not so sure -