Hemorrhoids hurt because of pressure on pain-sensitive nerves near the opening of the anus. The specific cause of your pain depends on which type of hemorrhoid you have, whether a blood clot has formed, and what activities are putting pressure on the area. Most hemorrhoid flare-ups are brief, with symptoms disappearing within a few days, but certain complications can cause intense pain lasting days to weeks.
Why Location Determines Pain
A natural boundary inside the anal canal called the dentate line divides two very different zones of nerve supply. External hemorrhoids sit below this line, in tissue covered by the same type of skin as the rest of your body. That skin is packed with pain-sensing nerves, which is why external hemorrhoids can hurt so much, especially when swollen, irritated, or rubbed during a bowel movement.
Internal hemorrhoids form above the dentate line, in tissue that only has visceral nerves. These nerves sense pressure but not sharp pain. That’s why internal hemorrhoids are normally painless. If you’re feeling significant pain, the source is almost always an external hemorrhoid, a blood clot inside one, or a separate issue like an anal fissure (a small tear in the lining).
Blood Clots: The Most Painful Complication
The most common reason hemorrhoid pain becomes severe is thrombosis, when a blood clot forms inside a swollen vein. Blood pools in the hemorrhoid and clots, creating a firm, tender lump you can often feel near the anus. A thrombosed hemorrhoid can be extremely painful and tender to the touch, making it difficult to sit, walk, or have a bowel movement comfortably.
Most people feel the pain is most intense in the first 48 hours after the clot forms. After that initial peak, the painful swelling typically resolves over a period of days to weeks as the body gradually reabsorbs the clot. In some cases, a doctor may drain the clot with a small incision to provide faster relief, particularly if you’re seen within the first day or two.
What Makes the Pain Worse
Several everyday habits and situations increase pressure on hemorrhoidal tissue, turning mild discomfort into real pain:
- Straining during bowel movements. Bearing down hard forces blood into the swollen veins, increases swelling, and creates more symptoms. Straining is both a cause and an amplifier of hemorrhoid pain.
- Prolonged sitting. Sitting for long stretches, especially on the toilet, keeps steady pressure on the anal cushions. Time on the toilet beyond what’s needed for a bowel movement is a common trigger.
- Constipation and diarrhea. Hard stools scrape against swollen tissue. Frequent loose stools irritate it. Both make pain worse and slow healing.
- Delaying bowel movements. Holding it in when you feel the urge leads to harder stools and more straining later. During a flare-up, go when you need to go.
- Heavy lifting. Lifting heavy objects increases pressure in the abdomen, which pushes blood into the veins around the anus and aggravates existing hemorrhoids.
How Long a Flare-Up Typically Lasts
A standard hemorrhoid flare-up, with swelling, irritation, and mild discomfort, usually clears up within a few days with basic self-care. Warm sitz baths (sitting in a few inches of warm water for 10 to 15 minutes), over-the-counter pain relievers, and topical creams or witch hazel pads can take the edge off during this window.
Thrombosed hemorrhoids follow a longer timeline. Expect the worst pain in the first two days, with gradual improvement over one to several weeks. If the pain doesn’t start easing after a few days or gets worse rather than better, that’s worth a conversation with a healthcare provider. Only a small percentage of people with hemorrhoids ultimately need surgical removal.
Preventing Pain From Coming Back
The single most effective long-term strategy is getting enough fiber. Fiber softens stool and adds bulk, which means less straining. The 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. Most people fall well short of that. Good sources include beans, lentils, whole grains, berries, and vegetables. If you’re adding fiber to your diet, increase gradually and drink plenty of water to avoid bloating.
Beyond fiber, staying hydrated, avoiding long sits on the toilet (put your phone down), and not straining or rushing bowel movements all reduce the pressure that causes hemorrhoids to swell and hurt in the first place. Regular physical activity helps keep things moving through your digestive system, which reduces the chance of constipation.
Signs That Need Prompt Attention
Most hemorrhoid pain is manageable at home, but certain symptoms point to something more serious. Large amounts of rectal bleeding, lightheadedness, dizziness, or faintness alongside bleeding are reasons to seek emergency care. Bleeding during bowel movements that persists, or hemorrhoids that don’t improve after a week of home care, warrant a visit to your provider. These symptoms can also overlap with other conditions, including anal fissures and, rarely, colorectal issues that benefit from early evaluation.