Sounds like causticum or other remedies, as berberis, or capsicum, sepia, calc, ac n, and so on.
Usual cause is peppers and chili, try one dose capsicum 30, and stay of peppers and chili, for good.If this dont work, you need a thourogh caseanalysis, this is to little info to find proper help on, my suggestion, is based upon the experince of your peoples food habits, and some similar cases, where the foood is playing a major role..