My doctor said i had acute gastroenteritis. what does this mean?

Acute stomach illnes: This is a generic term often used to describe acute episodes of nausea, vomiting and diarrhea. These symptoms are often caused by viral or bacterial infections and resolve on their own.

Stomach Flu: Gastroenteritis is the medical term for "stomach flu " , vomiting and /or diarrhea

Acute Gastroenteriti: Irritation & inflammation of stomach & intestines, most commonly caused by viruses, also called Stomach Flu, and presents with diarrhea, nausea, vomiting & abdominal cramps.