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Published on: 7/14/2026

What should I do if I discover a hard lump under the skin near my anus?

A hard lump under the skin near the anus is most commonly caused by a perianal abscess, a sebaceous cyst, a thrombosed (hardened) hemorrhoid, or an anal skin tag. Less commonly, it may indicate an anal fistula or, in rare cases, anal cancer. Because these conditions vary widely in urgency and treatment, evaluation by a healthcare provider is important for an accurate diagnosis.

Not sure what's causing your lump or whether it needs urgent care? Waiting on an appointment can be stressful, and searching symptoms often creates more confusion than clarity. A free, instant, online symptom check can help you understand possible causes based on your specific symptoms and guide you on the right next steps—whether that's home care, seeing a doctor soon, or seeking urgent evaluation.

Reviewed for medical accuracy: 07/14/2026

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Explanation

A hard lump near your anus might be caused by a few different problems. Sometimes, an abscess (a pocket of pus) can form when an infection occurs near the anal area. Other times, it might be a pilonidal cyst, which is a skin cyst that can become hard and painful. Hemorrhoids, which are swollen blood vessels around the anus, can also feel like lumps if they harden over time. While some of these issues can resolve on their own, a hard lump might also be a sign that you need treatment. It is important to note if the lump becomes more painful, grows larger, or if you notice other symptoms such as fever or difficulty with bowel movements. If you experience any of these signs, or if the lump worries you at all, you can check your symptoms to better understand what might be causing your discomfort and whether you should seek medical care. A healthcare provider can do a proper exam and, if needed, recommend treatment options such as antibiotics, drainage, or other procedures that will help you feel better.

(References)

  • Whiteford MH. Perianal abscess/fistula disease. Clin Colon Rectal Surg. 2007 May;20(2):102-9. doi: 10.1055/s-2007-977488. PMID: 20011384; PMCID: PMC2780182.

  • Bendewald FP, Cima RR. Pilonidal disease. Clin Colon Rectal Surg. 2007 May;20(2):86-95. doi: 10.1055/s-2007-977486. PMID: 20011382; PMCID: PMC2780177.

  • Acheson AG, Scholefield JH. Management of haemorrhoids. BMJ. 2008 Feb 16;336(7640):380-3. doi: 10.1136/bmj.39465.674745.80. PMID: 18276714; PMCID: PMC2244760.

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