My four year old son has been complaining about his stomch hurting with gas its been going on alot lately, what can it be, and how can.i treat it?

Needs evaluation: The causes of potential causes of abdominal pain in children are to numerous to narrow down without a more complete history and physical exam. Treatment will depend on the suspected cause. Malabsorption, allergy, infection, gastroesophageal reflux and anatomic anomaly are a few examples. Your pediatrician can help you sort this out.