Lump Near the Anus: What It Could Be and What to Do
Finding Something That Was Not There Before
Almost nobody goes looking. A lump near the anus is usually discovered by accident — a hand while washing, a moment of discomfort on a chair, a glance in a mirror after weeks of vague soreness — and the discovery is followed within about thirty seconds by the worst possible explanation. It is worth saying at the outset that the worst explanation is also the least likely one. The overwhelming majority of lumps in this area are benign, and most of them fall into one of five or six recognisable patterns that behave in characteristically different ways. The problem is that they cannot be told apart by worrying about them, and they frequently coexist: it is entirely normal to have a skin tag, an internal pile and a small tear all at once, which is exactly why self-diagnosis in this area has such a poor hit rate. What follows is how the common causes actually present, which ones need to be seen the same day, which need to be seen at some point, and which need nothing at all.
Three Questions That Narrow It Down Quickly
Before going through the individual causes, three observations do most of the sorting work, and they are worth making deliberately rather than in a panic. First, does it hurt? Painless lumps and painful lumps have almost entirely separate causes, because the anal canal above the dentate line has no somatic pain fibres and the skin below it has plenty. Second, is it there all the time, or does it appear and disappear? A lump that comes down when you strain and goes back afterwards is behaving like tissue that belongs inside; a lump that is permanently present is something that lives on the outside. Third, how fast did it arrive? Something that appeared over hours is a clot or an infection. Something that has been slowly there for months is a tag, a pile or something that needs looking at properly. Those three answers — painful or not, permanent or not, sudden or gradual — will usually place you in one of the sections below.
Sudden, Severe, Blue or Purple: a Clot
If the lump arrived over a few hours, is exquisitely tender, and looks like a firm blue, purple or dark swelling at the edge of the anus, the likeliest answer is a thrombosed haemorrhoid — a blood clot inside an external pile. It typically follows a bout of constipation, a long drive, a heavy lifting session or nothing identifiable at all, and the pain is genuinely significant: people describe sitting, driving and sleeping as the problems, rather than going to the toilet. It is not dangerous, and it is not an emergency in the medical sense, but it is one of the few things in this field where timing changes the options, because if it is going to be drained or excised that has to happen within roughly the first day or two. After that the sensible course is conservative — regular painkillers, ice, stool softeners, avoiding straining — and it settles over one to two weeks, often leaving a small painless tag behind. Worth knowing: the clot sometimes bursts on its own, producing an alarming amount of dark blood and, usually, immediate relief.
Comes Down When You Strain, Goes Back Afterwards
A soft lump that bulges during a bowel movement and then retreats — either by itself or with a gentle push — is almost always an internal haemorrhoid prolapsing through the anal opening. This is the single most common reason people feel a lump, and it is the one most often misidentified as an external pile, because what you are feeling from the outside is internal tissue that has come out for a visit. The distinction matters more than it sounds, because internal and external haemorrhoids are treated completely differently. Prolapsed haemorrhoids are graded by how far this has gone: grade 2 comes down on straining and returns by itself, grade 3 needs pushing back, grade 4 stays out permanently. Along with the lump you would expect painless bright red bleeding, some mucus, damp underwear and itching — pain is usually mild or absent unless something is trapped or clotted. Grade tends to creep up over years rather than weeks, but it does creep, and it determines which treatments remain easy.
A Soft, Painless Flap That Never Changes
If the lump is soft, skin-coloured, painless, has been there for months or years and does not change size, it is very likely a skin tag. Anal skin tags are simply stretched skin left behind after the swelling that caused them has gone — a healed thrombosed pile, a resolved flare, a pregnancy, an old fissure. They are medically harmless and need no treatment. The two reasons people want them dealt with are hygiene, because cleaning around a tag is fiddly and incomplete cleaning produces itching and soreness, and reassurance, because a permanent lump is a permanent reminder. A tag sitting at the back or front midline alongside a history of sharp tearing pain on passing stool is a sentinel pile, which is the marker of an anal fissure rather than a haemorrhoid at all, and treating the tag without treating the fissure achieves nothing.
Sharp Pain Like Glass, With a Small Lump at One End
This pattern gets misread as piles more often than any other. An anal fissure is a small tear in the anal lining, and it produces a very specific complaint: severe, sharp pain during a bowel movement, followed by a burning ache that can last an hour or more afterwards, often with a small amount of bright blood. Because the tear itself is invisible from the outside, what people notice is the tag at its outer edge and conclude they have a pile. The two need different treatment — a fissure needs the sphincter spasm broken with topical treatment and the stool kept soft, not a haemorrhoid procedure — and getting this wrong wastes months. If your dominant symptom is pain on defecation rather than a lump or bleeding, read that as a fissure until someone examines you and says otherwise.
Hot, Throbbing, Getting Worse by the Hour
This one needs a different kind of attention. A perianal abscess is a collection of pus near the anus, and it presents as a hot, red, increasingly painful swelling that builds over a day or two and keeps building, often with a throbbing ache that is present constantly rather than only when you go, and sometimes with fever, shivering or feeling generally unwell. It does not resolve on its own and it does not respond to creams or to antibiotics alone — it needs to be drained, usually as a small procedure under anaesthetic, and the sooner that happens the smaller the problem is. If your lump is hot to the touch, worsening hour by hour, or accompanied by a temperature, that is a same-day GP appointment, an urgent care centre or A&E, not a clinic booking in a fortnight. Abscesses are more common in people with diabetes, Crohn’s disease or a weakened immune system, and a discharge of pus with sudden relief means it has burst, which still needs assessing because it can leave a fistula behind.
Several Small Bumps Rather Than One Lump
Not everything in this area is haemorrhoidal, and multiplicity is the clue. Several small, firm, rough or cauliflower-textured bumps, usually painless and sometimes itchy, suggest anal warts, which are caused by HPV and are treated in sexual health or dermatology services rather than here. Small smooth domed bumps with a central dimple suggest molluscum contagiosum. A tender red lump centred on a hair, particularly in the cleft rather than at the anal margin itself, is more likely a boil or an infected hair follicle, and a swelling higher in the natal cleft with a pit or a discharging opening points to a pilonidal sinus, which is a different problem with a different service. None of these is treated with haemorrhoid procedures, and none of them will improve with pile cream. The reason to list them is simple: if the description of your lump does not fit anything in the sections above, that is information, and it is a reason to have it looked at rather than to keep guessing.
The Features That Mean Have It Seen Promptly
Anal and rectal cancers are uncommon, and the point of this section is not to suggest otherwise — it is that the features which distinguish them are not subtle, and knowing them lets you stop wondering. A lump that is hard rather than soft or springy, that feels fixed to the tissue underneath rather than mobile, that is ulcerated or bleeding from its surface, that has grown steadily over weeks or months, or that is accompanied by unexplained weight loss, a change in bowel habit lasting three weeks or more, blood mixed through the stool rather than streaked on its surface, or persistent pain that is unrelated to going to the toilet — any of those deserves a prompt appointment rather than a wait-and-see. So does any new lump or new bleeding after the age of about fifty, and any lump in someone with a family history of bowel cancer. Our comparison of haemorrhoids or bowel cancer sets out how the symptom patterns differ. Having haemorrhoids does not protect you from having something else at the same time, and the commonest reason a serious diagnosis is delayed is that bleeding or a lump was confidently attributed to piles by the patient without anyone looking.
What You Can Safely Do While You Wait
For a lump that is uncomfortable rather than alarming, the sensible measures are unglamorous and reasonably effective. Keep the stool soft and avoid straining, because every hard bowel movement reloads whatever caused the lump — that means fibre built up gradually rather than overnight, enough fluid, and a laxative such as a bulking agent or macrogol if constipation is the pattern. Do not sit on the toilet for long periods with a phone; the seat itself encourages the tissue to engorge. Warm baths for ten minutes relax the sphincter and relieve a surprising amount of pain, particularly with a fissure or a clot. Over-the-counter creams and suppositories reduce inflammation and soothe, which is worth having, but they do not shrink a pile, remove a tag or heal a tear, and using them for months is the most common way people spend two years not finding out what they have. Cold packs help a thrombosed lump in the first forty-eight hours. Do not attempt to lance, squeeze or tie off anything yourself.
What an Examination Actually Establishes
The reason to be examined is not that the lump is likely to be sinister — it is that the answer changes what can be done. An appointment here follows a set sequence: inspection of the outside, a digital rectal examination with a gloved, lubricated finger, and then proctoscopy, where a short lubricated instrument allows the inside of the anal canal to be seen directly. That is the only way to establish whether the lump is internal tissue prolapsing or external tissue sitting outside, what grade it is, whether a fissure is present, and whether anything is there that should not be. It takes a few minutes, a chaperone is present throughout, and whatever you are imagining about it is almost certainly worse than the reality — our step-by-step account of what happens at a haemorrhoid appointment exists precisely so that the unknown part stops being the obstacle. If the examination is too painful to complete, which happens most often when a fissure is present, it is stopped: that is a normal outcome and not a wasted visit.
What This Service Treats, and What It Does Not
Being explicit about this saves wasted journeys, and it matters more here than on most pages, because people arrive at an article about lumps with every kind of lump. This service assesses and treats internal haemorrhoid disease only. It does not treat purely external haemorrhoids, anal skin tags, fissures, fistulae, warts, abscesses or polyps. If you attend and the examination shows that the main problem is a tag or a fissure rather than internal piles, you will be told so and advised or referred onward — that is a legitimate result of the appointment, not a failed one. Where a fissure is present but you can tolerate the examination, the haemorrhoids can usually still be treated on the day; where the examination cannot be completed, the fissure is treated first and the return visit is free of charge. There are also contraindications that rule treatment out, including pregnancy, a pacemaker or defibrillator implant, a bleeding disorder, active anorectal infection and active inflammatory bowel disease, and if treatment does not go ahead the treatment portion of the fee is refunded.
If It Is Internal Piles, What Treatment Involves
We treat internal haemorrhoids with eXroid electrotherapy. A proctoscope is inserted into the anal canal, and a low-dose direct current is applied to the base of the haemorrhoid above the dentate line, closing off the vessel feeding it so that it shrinks over the following one to four weeks. There is no cutting, no stitching, no general anaesthetic, no fasting and no bowel preparation, and most people return to normal activity the same or the next day. Up to three haemorrhoids can be treated in one session. Two things we will not soften: it is uncomfortable, and a fair number of patients describe it as properly painful while it is being carried out — it is short, usually settles within about ten minutes of finishing, paracetamol beforehand helps, and the current can be turned down at any point, but nobody here will call it pain free. And you may need more than one treatment; how many cannot be predicted from an examination, outcome is not guaranteed, and complete clearance is not always possible. Of the 116 patients we have treated since January 2025, 84 per cent needed a single session, and most patients need one to three treatments to reach their own goal. NICE has given positive guidance for grade 1 to grade 3 internal haemorrhoids; grade 4 was not included because there was insufficient evidence at the 2018 review, and the equipment is approved in the United States for all four grades. Alternatives exist, including banding, sclerotherapy, surgery, or doing nothing, and we will go through them.
A Sensible Next Step
If the lump is hot, rapidly worsening, or you have a fever, deal with that today through urgent care rather than reading further. If it is hard, fixed, ulcerated, growing, or comes with weight loss or a change in bowel habit, see your GP this week. If it arrived suddenly and is severely painful, it is probably a clot, and the first forty-eight hours are the window in which anything active is worth doing. And if it has been there a while, is more nuisance than crisis, and you have been managing it with creams and hope, the useful step is not another tube — it is finding out what it actually is, because internal piles, a tag, a fissure and a prolapse need four different things and routinely occur together. Our severity test takes a couple of minutes and costs nothing, though grade can only be established by examination. For reference, a consultation with examination is £365, consultation and treatment together on the same visit is £1,095, which is what most people book, and a follow-up treatment if one is needed is £795; our breakdown of haemorrhoid treatment cost puts that alongside the alternatives. We see patients at Blythswood in Glasgow and on Wardour Street in London, the service is self-referral so no GP letter is needed, and a report can be provided for your GP afterwards.
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