An intestinal virus, also known as viral gastroenteritis, produces symptoms such as abdominal cramps, nausea and vomiting, watery diarrhea and a low-grade fever, as reported by Mayo Clinic. Some patients may also experience a low-grade fever with an intestinal virus.
Symptoms of an intestinal virus often appear within one to three days after the individual has been infected with the virus, as explained by Mayo Clinic. In most cases, symptoms disappear after a few days when a mild form of the virus has been contracted; however, severe cases of an intestinal virus may produce symptoms that last as long as 10 days.
Adult patients who experience extreme symptoms, such as vomiting for more than two days or an inability to keep liquids down for one day, should consult with a physician, as suggested by Mayo Clinic. Signs of dehydration, such as dry mouth, deep yellow urine and weakness, are also signs of concern when they are present with an intestinal virus. Infants and children with a fever above 102 degrees Fahrenheit, bloody diarrhea or signs of dehydration should be evaluated by a physician. In addition, infants and children in a lot of pain or discomfort may need immediate medical care.