I know I have a hard time in stores, maybe due to the flourescent lightening? It seems like my eyes are two to three seconds behind the movement of my head, so when I look around I get almost a disoriented, dizzy feeling.
Mine happen after a long stressful day (too much activity), too much sun, and definitely heat. Also loud noise makes my head spin. I am a singer and guitar player and I haven't been able to sing for 5 months!! It's SUCH a bummer!!
I started vestibular exercises after @1month with this crap. I also, walked daily and would force myself into bad lighting situations...even when I felt terrible. I was diagnosed with vestibular neuritis (caused by a virus) 8/2006.
I still can get off...but so much less...and now at times I am having periods of feeling decent.
Check out Charlotte's VRTs (search mode) to get good vrt exercises posted by a pt on this site.
Mine happen mostly at work, big open plan office full of fluorescent lighting and looking at the computer. Also shopping centres but only if I'm in there too long. At the beginning couldn't go at all. Tiredness is a big factor and also if I'm naughty and have a bit much to drink I'm not that great the next day.