Gastroenteritis is an irritation and inflammation of the digestive tract. In the United States, it is second only to the common cold in frequency of occurrence. There are many causes of gastroenteritis. The most common causes are infecting organisms such as viruses. Bacteria or parasites, food poisoning, allergies, certain medication, stressful situations, and overindulgence of alcohol may play a causal role.
Symptoms can vary greatly from person to person.
Viral gastroenteritis may last several hours to several days, with the average episode lasting 24-48 hours. In contrast, bacterial or parasitic infections can last well over a week and require medication for treatment. In these cases, laboratory tests are necessary before appropriate antibiotics can be prescribed. Gastroenteritis caused by viruses and bacteria can easily be passed on to others. It is important that you wash your hands thoroughly before preparing food for yourself and others.