I had chickenpox twice, once my senior year of high school (16 or 17) and again when I was in my early 20s. The first time was very mild, and the doctor warned me I'd probably get it again. Sure enough, one day I went into work not feeling very well. My boss looked at me, and asked what the hell was all over me. I had no idea what he was talking about. Look down, and I had red bumps all over my arms. They weren't there when I left for work. I was off work for a week or so. Oatmeal baths were my best friend (that and lots of alcohol). It sucked, but I wouldn't say it was anything terrible. More of an annoying inconvenience than anything else. I've been told I was pretty lucky though and that it could've been much worse.