What is gastric? how can it happen? what is the cure and how to prevent?

Gastric?: Gastric is a term that means related to the stomach. It is not a disease and there is not a prevention.

Gastritis: Do you mean " gastritis" if so, then it is an inflamation or mild irritation of the lining of the stomach; stress, certain bacteria( h.Pylori), medications like ibuprofen, Aspirin etc.. Can cause it, spicy/greasy foods can worsen symptoms ( burning sensation of stomach) it can progress to ulcer if not treated, avoiding sipcy food, alcohol, smoking. Medication such as ranitidine can help.