A lump that appears at your anus during a bowel movement is most commonly a prolapsed internal hemorrhoid, though it can also be rectal prolapse, an anal skin tag, or in rare cases a polyp. The good news is that the most likely cause, hemorrhoids, is very treatable. Understanding what type of lump you’re dealing with helps you figure out your next step.
Prolapsed Hemorrhoids: The Most Common Cause
Internal hemorrhoids are cushions of blood vessels that sit inside the anal canal. When they swell and stretch, they can slide downward and push out through the opening during a bowel movement. This is called prolapse, and it’s by far the most frequent reason people notice a lump when they poop.
Doctors grade internal hemorrhoids on a four-level scale based on how much they prolapse:
- Grade I: The hemorrhoid swells during straining but stays inside the anal canal. You won’t see or feel a lump.
- Grade II: The hemorrhoid pushes out during a bowel movement but slides back in on its own afterward. This is a common stage when people first notice something unusual.
- Grade III: The hemorrhoid comes out and stays out until you manually push it back in with your finger.
- Grade IV: The hemorrhoid is permanently outside and can’t be pushed back in at all.
If the lump you’re noticing goes away on its own after you finish, you’re likely dealing with a grade II hemorrhoid. If you need to gently push it back in, that’s grade III. Both are common and don’t necessarily require surgery, but they do benefit from treatment.
Thrombosed Hemorrhoids
Sometimes a hemorrhoid develops a blood clot inside it. This creates a hard, discolored lump near the anus that’s intensely painful, swollen, and inflamed. A thrombosed hemorrhoid doesn’t come and go with bowel movements. It stays, and the pain is constant rather than only during straining. This typically needs professional treatment rather than home care alone.
Rectal Prolapse: A Different Condition
Rectal prolapse looks similar to a prolapsed hemorrhoid but involves the full wall of the rectum telescoping outward through the anus. The key visual difference is the pattern of folds in the tissue. A prolapsed hemorrhoid has folds that radiate outward like the spokes of a wheel. Rectal prolapse shows circular, ring-like folds, because it involves a full cylinder of tissue sliding out rather than individual swollen cushions.
Rectal prolapse tends to produce a larger, more dramatic protrusion. It can also cause a feeling of incomplete evacuation, mucus discharge, and difficulty controlling bowel movements. It’s less common than hemorrhoids but more common in older adults and women who have had multiple pregnancies. Unlike mild hemorrhoids, rectal prolapse usually requires a procedure or surgery to correct.
Other Possible Causes
Anal Skin Tags
Skin tags are floppy pieces of skin that hang from the outside of the anus. They don’t actually prolapse from inside. They’re always there, though you might only notice them when wiping or straining makes the area more prominent. They can cause itching and make cleaning difficult, but they’re not dangerous. The key difference from hemorrhoids is that skin tags are soft, skin-colored flaps rather than swollen, compressible tissue that can be pushed back inside.
Rectocele
In women, weakened tissue between the rectum and vagina can allow the rectum to bulge forward into the vaginal wall. In severe cases, this bulge can protrude outside the vaginal opening, not the anus. If the lump you’re feeling is vaginal rather than anal during straining, a rectocele is a possibility, particularly after childbirth or with aging.
Polyps or Masses
Rarely, a large polyp or growth inside the rectum can act as a “lead point” and push outward during straining, sometimes being misidentified as rectal prolapse. This is uncommon, but it’s one reason any persistent or unusual lump deserves a proper evaluation.
What a Doctor’s Evaluation Looks Like
If you go in for an evaluation, the process is straightforward. The doctor typically starts with a digital rectal exam, using a gloved, lubricated finger to feel for any masses, swelling, or abnormalities in the anal canal. If that exam isn’t conclusive, the next step is usually anoscopy, a quick in-office procedure where a short, lighted tube is inserted to give a direct view of the anal canal and lower rectum. It takes just a few minutes and doesn’t require sedation.
Anoscopy is more sensitive than other scoping methods for detecting internal hemorrhoids, fissures, and other anorectal problems. However, it only visualizes the lower portion of the digestive tract. If there’s any concern about bleeding coming from higher up, a colonoscopy or sigmoidoscopy may follow.
Treatment Options for Prolapsed Hemorrhoids
For grade II and III hemorrhoids, two common office-based treatments can resolve the problem without surgery. Rubber band ligation involves placing a tiny elastic band around the base of the hemorrhoid, which cuts off blood flow. The tissue shrinks and falls off within about 10 to 14 days. This method successfully reduces prolapse in about 93% of cases and controls bleeding in roughly 89%. It can cause moderate pain afterward and occasional bleeding when the tissue separates.
Sclerotherapy involves injecting a solution into the hemorrhoid that scars the blood vessels and shrinks the tissue. It’s less effective for prolapse (working in about 66% of cases) but causes less post-procedure pain. Both treatments are done in a doctor’s office without general anesthesia, and most people return to normal activities quickly. Recurrence rates at three months are similar for both, around 10 to 15%.
Grade IV hemorrhoids and rectal prolapse typically require surgical repair, which your doctor can discuss based on the specifics of your situation.
Home Care That Helps
For mild prolapsing hemorrhoids, several strategies can reduce symptoms and prevent the problem from worsening.
Sitz baths are one of the most effective ways to ease pain and swelling. Fill your bathtub or a basin with 3 to 4 inches of warm water (around 104°F or 40°C, warm but not hot enough to burn). Soak the area for 15 to 20 minutes, up to three or four times a day when symptoms are active. This improves blood flow, reduces inflammation, and provides noticeable relief.
Fiber is the single most important long-term prevention tool. Adults need 22 to 34 grams of fiber per day, depending on age and sex. Most people fall well short of that. Increasing fiber through fruits, vegetables, beans, and whole grains softens stool and reduces the straining that causes hemorrhoids to swell and prolapse in the first place. If dietary changes aren’t enough, a fiber supplement can help bridge the gap. Drink plenty of water alongside increased fiber to keep things moving smoothly.
Avoid sitting on the toilet longer than necessary. Scrolling your phone while sitting creates prolonged downward pressure on the anal cushions. When you feel the urge to go, go. When you’re done, get up.
Signs That Need Prompt Attention
Most lumps during bowel movements are benign, but certain symptoms warrant a faster call to your doctor. Rectal bleeding shouldn’t be automatically chalked up to hemorrhoids, especially if your bowel habits have changed or your stool looks different in color or consistency. Large amounts of rectal bleeding, lightheadedness, dizziness, or faintness call for emergency care. A hemorrhoid that doesn’t improve after a week of home care, or a lump that’s hard, deeply discolored, and severely painful (suggesting a thrombosed hemorrhoid), also needs professional evaluation sooner rather than later.