Đến bác sĩ nếu tình trạng đầy hơi là nghiêm trọng và gây cản trở cho sinh hoạt hàng ngày. Đừng bỏ qua những triệu chứng nghiêm trọng. Sẵn sàng để bác sĩ thăm khám.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Passing gas up to 20 times per day is not considered unusual. But some symptoms may indicate that there is a more severe problem:  Severe, lasting pain Bloody or black stool Severe diarrhea or constipation Weight loss Chest pain Prolonged nausea Sometimes people assume they just have gas when it is actually a more serious condition such as:  Heart disease Gall stones Appendicitis Irritable bowel syndrome An obstructed bowel He or she will ask you about your eating habits and examine you physical