Hemorrhoids itch mainly because of inflammation, moisture, and irritation around the sensitive skin of the anus.

Why hemorrhoids itch

  • Swelling and inflammation : Hemorrhoids are swollen blood vessels; when they enlarge, they press on nearby nerves and tissue, triggering an itch‑sensation and releasing histamine‑like chemicals that make the area feel itchy.
  • Moisture and mucus : Prolapsed internal hemorrhoids can leak mucus, keeping the skin damp and irritated, which promotes itching.
  • Residual stool and poor hygiene : Pain from hemorrhoids can make people wipe less thoroughly, leaving tiny amounts of stool that irritate the skin and cause persistent itching.
  • Excessive wiping or harsh products : Over‑wiping or using wipes with alcohol, fragrance, or strong chemicals can strip the skin’s protective barrier, leading to dryness, micro‑tears, and more itch.
  • Friction and pressure : Tight underwear, prolonged sitting, or rubbing against clothing can further inflame the area and make itching worse.

Why it often feels worse at night

  • At night, there are fewer distractions, so the itch becomes more noticeable.
  • Lying down can increase blood flow and pressure in the area, and sweat or moisture trapped in underwear can intensify irritation.

When to see a doctor

  • Itching that lasts more than a week or two despite home care.
  • Bleeding, severe pain, a lump that won’t go back in, or changes in bowel habits (which can signal other conditions like fissures, infections, or, rarely, colorectal issues).

If you’d like, the next step can be a short list of safe home‑care tips (like sitz baths, gentle wipes, and OTC creams) tailored to this symptom.