Mine was total loss of hearing in one ear while sitting at my desk at work. It took about 5 seconds to go from totally normal hearing to completely gone, and it took about 8 weeks before it started coming back. It has come back to nearly normal in terms of hearing deficit, but I have tinnitus that comes and goes now and I don't process sounds very well in noisy environments anymore. For example, I have a really hard time hearing a conversation from somebody right beside me when I am in a noisy restaurant.