Stomach Bug? What You Need to Know About Acute Gastroenteritis

Aug 3

2 min read

One minute you're fine, the next you're running to the toilet. If that sounds familiar, there's a good chance you've had acute gastroenteritis, better known as the "stomach flu" or "stomach bug". It's one of the most common reasons people walk into our clinic, and the good news is that most cases clear up within a few days.

Here's what's actually going on, how to look after yourself at home, and when it's time to see a doctor.

What is acute gastroenteritis?

It's a short-lived inflammation of the stomach and intestines. Despite the nickname, it has nothing to do with influenza. It usually comes on suddenly and can make you feel quite miserable for a day or three.

Common symptoms

Diarrhoea (loose, watery stools)
Vomiting and nausea
Tummy pain and cramps
Fever, headache and muscle aches

What causes it?

Viruses are the usual culprits, such as rotavirus and norovirus.
Bacteria and parasites, often picked up from contaminated food or water (E. coli and Salmonella are two well-known examples).
Poor hand hygiene, especially not washing hands after using the toilet or handling contaminated objects.

Looking after yourself at home

Most people get better on their own. The main thing is to avoid dehydration.

Keep drinking. Oral rehydration salts (ORS) are the best way to replace the fluid and salts you're losing. Small, frequent sips work better than big gulps.
Eat bland food. The BRAT diet (bananas, rice, applesauce and toast) is gentle on the stomach.
Skip spicy, oily and dairy-heavy food until you feel better.
Rest. Your body needs the energy to recover.
Be careful with over-the-counter anti-diarrhoea or anti-vomiting medicine. It's best to use these on a doctor's advice.

Preventing it

Wash your hands often with soap and water.
Make sure food is cooked properly and stored safely.
Keep your distance from people who are already sick.

When to see a doctor straight away

There's blood in your vomit or stool.
You notice signs of severe dehydration: a very dry mouth, dizziness, or passing very little urine.
Your symptoms are severe, not improving, or getting worse.

If you're unsure, it's always fine to come in and get checked. Our doctors at Klinik Sinar see gastroenteritis every day and can help you recover faster and safely.