Orf

Also called Contagious pustular dermatitis or Sore mouth infection

Orf is a skin infection caused by a virus that people can catch from infected sheep and goats, often through a cut on the hand. It is most common in farmers, vets, shearers and people who bottle feed lambs. It does not usually spread from person to person.

Last updated Nov 9, 2026

What it is

It usually clears up by itself within 3 to 6 weeks without leaving a scar. Keeping it covered and clean helps.

Sometimes the area becomes infected with bacteria and needs antibiotics. People with a weakened immune system may need specialist care.

Common signs

  • A small red itchy or painful lump, usually on a finger or hand
  • The lump growing into a blister with a crust
  • Mild fever or tiredness
  • Swollen glands in the armpit

How it is usually diagnosed

  • Examination and questions about contact with sheep or goats
  • Rarely a swab or skin sample

Records worth keeping

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

  • GP notes
  • Swab results
  • Any antibiotic prescriptions

Questions to ask your doctor

  • How should I care for the lump?
  • When should it heal?
  • What signs of infection should I look for?

When to get help right away

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

  • Spreading redness, swelling and heat, or red streaks up the arm with a fever: see a doctor the same day

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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