Citrus fruits as these are acidic in nature and again worst the symptoms.
Hot sauce, pepper
White flour
Nuts, crunchy nut butters
Popcorn
Meat
Spicy foods, sauces
Garlic, ginger
Insoluble fiber diet - Though Fiber, the undigested part of food, is found in whole grains, fruits, and vegetables. While fiber is good for most people, it can be hard for someone with Irritable bowel syndrome to handle specially the insoluble one found in multi grain foods.
Late night sleep
Mental stress and tension
Recommended Diet
Fresh yogurt + banana every day.
Pumpkin, ridge guard, round guard, bottle guard.
Green grass juice one glass daily.
Green grams (Moong daal).
Moong daal khichadi.
Herbal tea daily once made from cumin, coriander, thyme and fennel.
Include soluble fibers in diet like vegetables and fruits.
Prefer low fat dairy products.
Drink plenty of water and exercise regularly
Psyllium husk (Isabgol) is very good if you want to regularize bowel and improve digestion.