NHS Choices Condition
Content supplied by NHS Choices
The symptoms of an anal fistula may include:
- a throbbing, constant pain,
- irritation of skin around the anus,
- fever,
- evidence of pus or blood when passing stools, and
- generally feeling unwell.
Pain tends to worsen when you sit, move around, pass stools or cough.
If a fistula has been caused by a condition which causes inflammation of the intestines, such as irritable bowel syndrome (IBS), ulcerative colitis, diverticulitis or Crohn's disease, you may experience other symptoms such as:
- abdominal pain,
- diarrhoea,
- loss of appetite,
- weight loss,
- nausea, and
- vomiting.
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