Acute gastritis is one of the common upper gastrointestinal diseases. The condition tends to be severe and more serious than typical gastritis, usually presenting with symptoms such as sudden onset, abdominal pain, bloating, nausea, acid reflux, and vomiting. The primary causes may include exposure to cold or food irritants, such as raw, spicy foods, or alcohol. Additionally, other factors can also lead to acute gastritis or acute gastric mucosal lesions, such as the use of non-steroidal anti-inflammatory drugs like aspirin, or corticosteroid medications such as dexamethasone or prednisone. (Specific medication use should be under the guidance of a doctor.)