stomach queasiness

Another question from my friend Paul recently diagnosed with GBS. He has started physiotherapy, in which he is slowly making progress. He can slowly walk across the room (although he gets dizzy). His physio says he is a little steadier on his feet. However he has a lot of stomach queasiness. (He’s not on any GBS-related drugs due to other factors – weight, blood pressure, etc). This is likely a tricky question given the whole range of symptoms GBS sufferers can have…but he wants to know how normal stomach queasiness (or nausea sometimes) is for the recovery phase. Any responses?