About this symptom
Mucus, blood-stained fluid or pus from the anus can be associated with irritation, inflammation and diseases of the anorectal region. Assessment considers the discharge and accompanying symptoms together.
What you should know
Small amounts of mucus sometimes occur with irritation or prolapsing haemorrhoids, while repeated moisture can cause itching. Recurrent pus, particularly from a tiny opening in the skin, may indicate a fistula or infection and should not be dismissed.
Symptoms and reasons for assessment
Discharge may be noticed on underwear, paper or surrounding skin. Pain, swelling, bleeding, fever, changes in bowel control and duration of symptoms are important details. Sudden worsening pain with pus can occur in an abscess.
Other possible explanations
Possible causes include haemorrhoids, an anal fistula, perianal abscess, inflammation and faecal leakage. Appearance alone cannot establish a diagnosis, and inadequate hygiene is not the only explanation.
How the condition is assessed
The clinician asks about colour, odour, quantity, timing relative to bowel movements and pain. The surrounding skin and any external opening are examined. Imaging or other investigations may be recommended if a deeper process is suspected.
Treatment and follow-up options
Gentle hygiene can ease skin irritation but does not cure a fistula or abscess. Infection needs appropriate assessment and treatment. Do not insert medicines into an opening or squeeze a swollen area at home.
When urgent care is needed
Pus with increasing pain, fever, chills, weakness or rapidly progressing swelling needs urgent medical review. Major bleeding or fainting is an emergency: call 103.
Related health information
Signs and symptoms
Diagnosis and tests
Care and treatment approaches
When to seek urgent care
Frequently asked questions
Can haemorrhoids cause mucus discharge?
Yes, although mucus is also seen in other conditions, so the cause needs assessment.
Could pus be a sign of an anal fistula?
Yes. Repeated pus near the anus may be linked to a fistula or an abscess.
Is improved hygiene enough to stop discharge?
Not when a fistula, abscess or other disease is responsible; treating the cause is essential.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
