Acute gastritis is mostly caused by unhygienic dietary habits and is more common in summer. The symptoms mainly involve gastrointestinal irritation, such as nausea, vomiting, fever, and loss of appetite. Active pharmacological treatment should be given for acute gastroenteritis. Commonly used medications include those that suppress gastric acid secretion, protect the gastric mucosa, and antibiotics. During treatment, it is advisable to eat small, frequent meals consisting primarily of soft, easily digestible foods, and to avoid cold, spicy, or irritating foods. (Please take medication under the guidance of a doctor.)