What causes stomach pain on the left?

The causes of stomach pain on the left side are as follows: the first kind, may be caused by gastritis, can take belladonna tablets for treatment, if the symptoms can not be relieved, it is recommended to go to the hospital digestive internal medicine for further examination. Secondly, may be caused by pancreatitis, also does not rule out is caused by heart disease, it is best to go to the hospital to do relevant examination, identify the cause of disease after symptomatic treatment. Third, consider may be caused by gastric ulcer, it is recommended to take omeprazole for drug treatment.