Hemorrhoids vs Anal Fissure vs Anal Fistula: What Is the Difference?

Pain

• Hemorrhoids: internal hemorrhoids are usually painless; pain suggests a thrombosed external hemorrhoid or prolapse.
• Fissure: sharp, tearing pain during a bowel movement, often lasting minutes to hours afterwards.
• Fistula: a dull ache or pressure that builds before discharge and eases after it, with severe pain if an abscess forms.

Bleeding

• Hemorrhoids: bright red blood dripping into the bowl or coating the stool, typically painless.
• Fissure: a small amount of bright red blood on the paper, accompanied by pain.
• Fistula: bleeding is uncommon; the discharge is usually pus or fluid, sometimes bloodstained.

Itching, discharge and moisture

• Hemorrhoids: itching and a moist feeling from mucus and difficulty keeping the area clean.
• Fissure: irritation is possible but pain dominates the picture.
• Fistula: persistent discharge staining underwear is the hallmark feature.

Swelling, bulge and external opening

• Hemorrhoids: a soft swelling or prolapsing lump, often appearing after a bowel movement.
• Fissure: usually no lump, though a small skin tag may form at the outer edge of a chronic fissure.
• Fistula: a small external opening in the perianal skin that repeatedly closes and reopens.

Pattern around bowel movements and abscesses

• Pain during the bowel movement: most typical of a fissure.
• Pain after the bowel movement: typical of a fissure, and of thrombosed external hemorrhoids.
• Painless bleeding with a bulge: points toward hemorrhoids.
• Recurrent abscess in the same area: strongly suggests an underlying fistula.

Why examination still matters

These patterns are guides, not a diagnosis. More than one condition can be present at the same time, and other causes — including inflammatory bowel disease, polyps and colorectal cancer — can produce similar symptoms. Any rectal bleeding, persistent pain or ongoing discharge should be examined rather than self-diagnosed and self-treated.