Pyoderma Gangrenosum - NHS

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Symptoms of pyoderma gangrenosum

The main symptom of pyoderma gangrenosum is a large, painful ulcer on your skin.

It usually starts as a small bump, spot or blood blister that gets bigger quickly and turns into an ulcer.

Sometimes you may have more than 1 ulcer.

Pyoderma gangrenosum ulcers:

  • usually appear on the legs or chest
  • may also appear around a cut or graze, a stoma (where part of your bowel is brought through an opening made in your tummy), or cuts from surgery
  • may leak fluid
Pyoderma gangrenosum ulcer on white skin. The ulcer is dark pink underneath. It is light purple around the edge.
On white skin, the pyoderma gangrenosum ulcer will often be blue or purple around the edge.
Credit:

DermNet: https://dermnetnz.org/assets/collection/Pyoderma-gangrenosum/pyoderma-gangrenosum-0015.jpg

A pyoderma gangrenosum ulcer on the leg shown on dark brown skin. The ulcer looks red and around it is darker and slightly purple.
On brown or black skin, the skin around the pyoderma gangrenosum ulcer may be darker than the rest of the skin.
Credit:

DermNet: https://dermnetnz.org/assets/collection/Pyoderma-gangrenosum/pyoderma-gangrenosum-0039.jpg

Other symptoms include:

  • stiff joints
  • aching and painful muscles
  • a high temperature

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