According to the information you provided, superficial gastritis is not caused by improper diet, catching cold, hyperacidity and helicobacter pylori infection. Milk has the function of protecting gastric mucosa, which can be smeared and has synergistic effect with lansoprazole.

Suggestion:

It is suggested that we should pay attention to the diet and its regularity, do not eat irritating, spicy and cold food, eat lansoprazole and drink milk.