For those who have not got chicken pox, there is a vaccine (Varivax or similar name). Not supposed to be 100% perfect, but if you did not get chicken pox when you were a kid, better take care. Chicken pox in adults can be more complicated than in kids. I have got the vaccine many years ago. But dunno how long it is effective or whether it is reccomended now. At that time (arround year 2000) it was mentioned as effective for about 10 years.
For those who get chicken pox, there is a tablet (I forget the name of the tablet), that will reduce the scars and ill effects, but as someone mentioned in a previous post, have to take it soon. A relation of mine took it and there were hardly any scars.
Please check with your doctor.