Severe gastritis and small ulcers usually heal with proper treatment and lifestyle control. Reduce stress, avoid alcohol, smoking, spicy/acidic foods, and irregular meals. Maintain good sleep and small frequent meals. Testing for Helicobacter pylori is important, as infection commonly causes gastritis and duodenal ulcers. Early management prevents complications.

First thing the cause of the ulcer is not known Pin point ulcers can progress or regress both If it progresses it can cause ulcer bleed and persistent vomiting U need to get tested for h pylori

Yes wil lead to complications if treatment not taken