Dysentery

Also called Shigellosis, Amoebic dysentery, or Bloody diarrhoea

Dysentery is an infection of the bowel that causes diarrhoea with blood or mucus. It is usually caused by Shigella bacteria or, especially after travel, by an amoeba parasite. It spreads through contaminated food and water or from person to person when hands are not washed well.

Last updated Nov 9, 2026

What it is

Most people with bacterial dysentery get better within a week. Amoebic dysentery and some bacterial cases need specific medicines.

Drinking plenty of fluids is important. Washing hands thoroughly helps stop it spreading to others.

Common signs

  • Diarrhoea with blood or mucus
  • Tummy cramps and pain
  • Fever
  • Feeling or being sick

How it is usually diagnosed

  • A stool sample tested in a lab
  • Questions about travel and food

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Stool test results
  • Travel history
  • Treatment given

Questions to ask your doctor

  • Do I need antibiotics or other medicine?
  • How do I stop it spreading at home?
  • When can I go back to work, especially if I handle food?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Signs of severe dehydration, heavy bleeding, high fever or severe tummy pain: get urgent help

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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