The most common symptom associated with<unk>  is a sensation that the abdomen is full or distended. Rarely,<unk>  may be painful or cause shortness of breath. Pains that are due to<unk>  will feel sharp and cause the stomach to cramp. These pains may occur anywhere in the body and can change locations quickly. They are so painful that they are sometimes mistaken for heart pains when they develop on the upper left side of the chest. Pains on the right side are often confused with problems in the appendix or the gallbladder. One symptom of gas that is not normally associated with it is the hiccup. Hiccups are harmless and will diminish on their own; they also help to release gas that is in the digestive tract before it moves down to the intestines and causes<unk> . Important but uncommon causes of abdominal<unk>  include ascites and tumors.
Bloating
Sniffing 
Fecal vomiting
Overeating
Coffee ground vomiting
Body odor
Drooling
Blood in stool