This is a most unpleasant feeling and many people just wouldn't be able to work effectively.
Nausea is a side effect of the dizziness that comes from the inner ear imbalance.
This dizziness can last for a short time or an extended period. Whichever time it lasts, it is very debilitating. For the family this can be a very unpleasant task to help with. Patience and a lot of understanding will be helpful.