Pus From the Anus
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Reviewed By:

Carlos Cuenca, MD

Carlos Cuenca, MD (General surgery)

Dr. Cuenca graduated from Rutgers New Jersey Medical School. He is currently a categorical surgical resident at UC Davis Health.

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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  • Purulent discharge from the anus

  • Anal discharge of pus

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Content updated on Jan 4, 2023

About the symptom

Purulent discharge from the anal region is yellow or yellow-white pus from the anus. It is usually the result of an anal abscess which is a painful condition in which a collection of pus develops near the anus. It occurs due to infection of the small anal glands.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Pus from around the anus or anus itself

Possible causes

  • Ulcerative colitis

    An inflammatory condition of the large intestine that damages the gut wall. The exact cause is not well known.

  • Crohn's disease

    It is an inflammatory condition of the gut. It is part of a group of diseases known as inflammatory bowel disease or IBD. It can affect anywhere from the mouth to the anus (end of the bowel).The exact cause is not well known.

  • Anal fistula

    This condition involves a tunnel forming between the anus and the surrounding skin. Patients are at risk for recurrent infections, often connected to inflammatory bowel diseases like Crohn's disease.

Related serious diseases

  • Perianal abscess

    A buildup of pus near the anus, more common in patients with diabetes, obesity, or certain conditions causing gut ulcers.

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you have pus from around the anus or anus itself?

  • Do you have a fever?

  • Do you have anal pain?

  • Do you have itching of the anal region?

  • Are you passing out blood from the anus?

Other Related Symptoms

Similar symptoms or complaints

Reviewed By:

Carlos Cuenca, MD

Carlos Cuenca, MD (General surgery)

Dr. Cuenca graduated from Rutgers New Jersey Medical School. He is currently a categorical surgical resident at UC Davis Health.

Yoshinori Abe, MD

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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