Yeah, in my case a combination of loud music and power equipment. I use hearing protectors now, but didn't for many years.
I've always had problems following conversations in noisy environments, though in that regard my left ear is a little better than the right. People probably think I'm being rude when I turn my head away when they're speaking, but it's actually to put my "good" ear towards them.
As far as high frequencies go, yeah they're gone. My wife will ask me if I hear something (a bird tweeting, insects chirping, etc.) and I don't hear a thing. My low frequency hearing is better than hers though.