Drop attacks are not just falls, I've had some, my mum has had a lot more and they are horrible, basically vertigo so bad it throws you to the floor, usually accompanied by severe vomiting (think coming off the waltzers after having drunk way too much so the room is spinning) and it can take a long time before you are able to even move your head, it's not just a fall.
The general off balance and vertigo can lead to falls though as awareness of what is around you can be screwed and when you have pressure in your ears and tinnitus etc... it can be very disorientating, especially if in one ear. I have it in both but can get worse symptoms in my worse ear.