What causes gas and how do i get rid of it?

What causes "gas": Gi gas arises from maldigestion (enzyme deficiency like lactose intolerance), food intolerance (ex. Gluten sensitivity), fermentation (as with bacterial overgrowth syndrome or changed flora after antibiotics), altered GI tract motility/gastroparesis, excessive air swallowing, inflammatory ;infectious causes. Any peptic symptoms, early satiety? Tried acid blockers yet? Also check out fod-map diet.