19-year-old girl always dilatation may be due to improper diet, gastrointestinal dysfunction, chronic enteritis, intestinal tumors and other disease factors, can be adjusted lifestyle, montelukast, norfloxacin, bifidobacteria and other drugs, surgery and other ways of treatment. 1. Improper diet: patients often eat cold drinks, spicy and other stimulating foods, which can cause diarrhea and other conditions, you can adjust the diet structure, eat more fresh vegetables and fruits, and pay attention to the warmth of the abdomen, which can be effectively relieved. 2. Gastrointestinal dysfunction: due to infection, improper diet and other reasons, leading to diarrhea, abdominal pain and other symptoms, you can adjust the daily diet structure, and follow the doctor’s instructions for oral medication, such as bifidobacteria, magnesium aluminum carbonate and so on. 3. Chronic enteritis: due to long-term bacterial, viral and other infectious factors, leading to long-term diarrhea, follow the doctor’s instructions to use antibacterial drugs, such as norfloxacin, penicillin, etc., antidiarrheal treatment, such as montelukast and so on. 4. Intestinal tumor: benign or malignant tumor occurs in the intestinal tract, there will be diarrhea, bloody stools, abdominal pain and other symptoms, should go to the hospital in time to take pathological examination, clear the nature of the tumor, and then take surgical resection treatment. It is recommended that patients should go to the hospital in time when they have diarrhea, so as not to delay the condition.