Recently I started feeling nausea from the descent until landing. This happened on 5 of 6 flights which I have taken this month. I do not feel nausea during the rest of the flight. Flights have not caused me to feel motion sickness before - nor do trains - but every other mode of transportation does. Boats make me dizzy and vomit in minutes and even cruises, buses and cars (unless driving) make me nauseous after a short while.
Is it common to feel nausea only during flights landing? Why does start happening?
What can be done to prevent this?