That's both stress related and foods or drinks that stress the body. E.g. Coffee, never drink it on an empty stomach, goes for tea as well and you might find not drinking it at all is a better option. If you know your triggers you can use Break the Habit. I recommend Deep Relaxation for the general stress, especially if you're dealing with a bout.

Not Paraliminal, something I found that helped is Ginger. Naked ginger (uncrystallised) takes a bit to get used to it's bite. Or ginger drink, (ale,beer... my preference is a cordial 50 ml to 400 ml sparkling mineral water.) Usually before or after a main meal. Bouts are further apart and shorter lasting.

Alex