The gastric flu, also called the stomach flu or gastroenteritis, is an inflammatory infection of the gastrointestinal tract caused by bacterial, parasitic or viral pathogens. Approximately 5 to 10 million people throughout the world die from complications of the gastric flu each year, according to the Cleveland Clinic. People who develop gastric flu symptoms should be evaluated by a medical professional as soon as possible.
Diarrhea
Diarrhea is the primary symptom associated with the gastric flu. Affected people experience frequent watery bowel movements that can be accompanied by abdominal cramping or pain. Typically, people with this type of infection do not develop blood within their stools, MayoClinic.com reports. Diarrhea symptoms can persist for up to 10 days, though symptoms generally only last for one to two days. People who experience chronic diarrhea symptoms due to the gastric flu are at risk of becoming dehydrated. Symptoms of dehydration require immediate medical intervention and include dizziness, weakness, dry mouth, increased thirst and dark urine discoloration.
Nausea or Vomiting
Nausea and vomiting can occur as symptoms of the gastric flu. Persistent vomiting can also increase a person's risk of developing dehydration due to excessive fluid loss. These symptoms of the gastric flu typically arise within one to two days following exposure to the infection, according to the Centers for Disease Control and Prevention. People who can't keep fluids down for longer than 24 hours should seek care from a doctor immediately.
Weight Loss
Diarrhea and vomiting can cause a diminished appetite, fluid loss and, consequently, weight loss in certain people with this stomach infection, the Cleveland Clinic reports. Weight loss may be more apparent in people who experience gastric flu symptoms for longer than a couple of days.
Flulike Symptoms
Additional flulike symptoms can affect people who develop the gastric flu. People can experience a low-grade fever, headache, muscle or body aches, clammy skin, or unusual sweating. People who exhibit any of these symptoms in conjunction with vomiting or diarrhea should receive prompt care from a medical professional.
