markg wrote:
It's not an old wives tale, it definitely is the exact same virus it's just that whilst most people will develop immunity an unfortunate few won't.
Same virus, different disease apparently. As I understand it from having just spent some time reading about it, 1 in 3 adults over a certain age who have had chicken pox will get shingles later in life as like most viruses it stays in your 'system' but is suppressed by your immune system. Age and other ailments can suppress your immune system and then the virus can resurface.
Although not 100% true, due to chicken pox being highly contagious and shingles not being very contagious, it's very unlikely you'll get shingles unless you've had chicken pox, or a chicken pox immunisation jab. Also, if you've never had chicken pox and you're exposed to someone with shingles, in the unlikely event that the virus (you would need direct contact with the sores, so getting it on your hands and then rubbing your eyes or similar), transfers, you'll very likely get chicken pox and not shingles.