hi Isabella. It really depends on what has caused it - do you know? Food, sun, (pregnancy?!)... As a very simple one if it is food caused I'd go for water and gluten free bread (the one time I eat bread), no butter, no dairy, no sugars, definitely no processed foods (
http://www.aroundthetablewithkaren.com/2012/03/16/how-to-read-food-labels-anywhere/) nothing to irritate the gut BUT it totally depends on what is causing it. Feel free to come back to me with more info and I'll happily make some more specific recommendations, Karen