There is some kind of general aversion to food, and eating....associated with Sickness Behavior. (slightly theoretical)...
Then anxiety or anxious situations, now I"m not really eating much of this lunch, out someplace where I am not supposed to be......
Social eating has been an issue of years- the pot luck, the group of people chatting and having a great fun time eating...over stimulated, not enjoying this food.
Severe nausea pregnant- thats a given
Episodes of nausea associated with recurrent viral (probably) gastroperesis
IBS-d includes feeling nauseated during bowel activity.
The chinese traditional herbs include some good formulas (think over the counter pills) for nausea and I have found them helpful.
The doctors pill for nausea, like they gave me in the ER? that causes my gut to turned to cement. I cannot tolerate them and they don't seem to stop the nausea, anyway. Very lousy, the pill or shot for nausea.