Gastroenteritis, commonly known as the stomach flu, is a prevalent gastrointestinal disorder characterized by inflammation of the stomach and intestines. This condition often presents with symptoms such as nausea, vomiting, diarrhea, abdominal cramps, and sometimes fever. Gastroenteritis is primarily caused by viral or bacterial infections, with viruses like norovirus, rotavirus, and adenovirus being frequent culprits. Bacterial infections can result from consuming contaminated food or water, with bacteria like Escherichia coli (E. coli), Salmonella, and Campylobacter among the common causes. In addition to infectious agents, gastroenteritis can also be triggered by toxins produced by bacteria, parasites, or chemicals in food and water. The inflammation of the digestive tract leads to the characteristic symptoms, disrupting the normal absorption of nutrients and water. While most cases of gastroenteritis are self-limiting and resolve within a few days with supportive care and fluid replacement, severe cases may require medical attention, especially in vulnerable populations such as young children, the elderly, or those with weakened immune systems.