Blood on the toilet paper after wiping is extremely common and usually caused by hemorrhoids or a small tear in the skin around the anus. About 1 in 7 adults report experiencing rectal bleeding at some point, and the vast majority of cases trace back to something minor and treatable. That said, the color, amount, and accompanying symptoms all matter in determining whether you need medical attention.
Hemorrhoids: The Most Likely Cause
Hemorrhoids are swollen blood vessels in and around the anus, and they’re the single most common reason for blood on toilet paper. Internal hemorrhoids sit inside the rectum where you can’t see or feel them. They typically cause painless bleeding, leaving small amounts of bright red blood on the tissue or in the toilet bowl. You might not even know you have them until you notice the blood.
External hemorrhoids form under the skin around the anus and tend to cause itching, swelling, and discomfort along with bleeding. If a blood clot forms inside one (called a thrombosed hemorrhoid), the pain can be severe and sudden, with noticeable swelling and inflammation. Straining during bowel movements, sitting for long periods, chronic constipation, and pregnancy all increase the risk. Pregnancy in particular predisposes women to hemorrhoids because of hormonal changes and increased pressure in the abdomen.
Anal Fissures: When It Hurts to Wipe
If the blood comes with a sharp, stinging pain during or after a bowel movement, an anal fissure is the likely culprit. A fissure is a small tear in the lining of the anus, often caused by passing a hard or large stool. The pain can linger for hours after you go, which is a distinguishing feature. You may also notice a visible crack in the skin or a small skin tag near the tear. Like hemorrhoids, fissures produce bright red blood on the stool or toilet paper.
What the Color of Blood Tells You
The shade of blood you see is a useful clue about where the bleeding originates. Bright red blood almost always means the source is low in the digestive tract: the rectum, anus, or lower colon. This is the type you’ll see with hemorrhoids, fissures, or minor irritation, and it’s the most common scenario when you notice blood only on the toilet paper.
Dark red or maroon blood suggests bleeding higher up in the colon or small intestine. Black, tarry stools (sometimes called melena) often point to bleeding in the stomach, such as from an ulcer. Either of these warrants prompt medical evaluation because the bleeding is coming from a source that can’t be explained by surface-level irritation.
Less Common but Serious Causes
While hemorrhoids and fissures account for most cases, rectal bleeding can occasionally signal something more significant. Inflammatory bowel conditions like Crohn’s disease or ulcerative colitis can cause blood in the stool along with persistent diarrhea, cramping, and weight loss. Colorectal polyps or colorectal cancer can also bleed, though these rarely cause bleeding that only shows up on toilet paper with no other symptoms.
Pay attention to the bigger picture. Blood on the tissue after a hard bowel movement that resolves on its own is very different from ongoing bleeding paired with changes in your bowel habits, unexplained weight loss, fatigue, or stools that become persistently narrow. Those combinations deserve investigation. Colorectal cancer screening is now recommended starting at age 45 for average-risk adults, expanded from the previous starting age of 50.
When Bleeding Needs Urgent Attention
A small streak of bright red blood on the tissue after straining is rarely an emergency. Heavy bleeding is different. If you’re passing large amounts of blood, feeling lightheaded or dizzy, have a rapid heartbeat, or feel faint, those are signs of significant blood loss that requires immediate care. This level of bleeding is rare from hemorrhoids or fissures and usually involves a more serious source higher in the digestive tract.
How Doctors Figure Out the Source
If bleeding persists or your symptoms don’t fit the typical hemorrhoid pattern, a doctor will likely start with a physical exam that includes a digital rectal exam, where a gloved, lubricated finger checks for hemorrhoids, fissures, or other abnormalities. If more information is needed, an anoscopy may follow. This involves inserting a small, lighted tube about two inches into the anus to view the lining of the lower rectum directly. The procedure is done in the office, takes just a few minutes, and doesn’t require anesthesia. If anything looks abnormal, a small tissue sample can be collected during the same visit.
For bleeding that might originate higher in the colon, a colonoscopy provides a more complete picture. This is also the standard screening tool for colorectal cancer.
Practical Steps to Stop the Bleeding
Most bleeding from hemorrhoids and fissures responds well to straightforward changes. The goal is softer stools that pass easily without straining.
- Increase your fiber intake. Current dietary guidelines recommend 14 grams of fiber per 1,000 calories you eat, which works out to about 28 grams per day on a standard 2,000-calorie diet. High-fiber foods like beans, whole grains, fruits, and vegetables make stools softer and easier to pass.
- Drink more water. Fiber works best when you’re well hydrated. Water, fruit juices, and clear soups all help fiber do its job.
- Don’t strain or linger on the toilet. Scrolling your phone on the toilet keeps pressure on those blood vessels longer than necessary. Go when you feel the urge, and get up when you’re done.
- Try a sitz bath. Sitting in a few inches of warm water for 10 to 15 minutes after a bowel movement can soothe irritation and promote healing, especially for fissures.
Over-the-counter creams and suppositories can relieve hemorrhoid symptoms temporarily, but they don’t fix the underlying problem. If bleeding continues for more than a week despite dietary changes, or if it gets heavier, it’s worth getting checked. Only about 14% of people who experience rectal bleeding actually see a doctor about it, but persistent or worsening symptoms shouldn’t be ignored just because the cause is usually benign.