Injection Sclerotherapy

In brief: Injection sclerotherapy introduces a chemical agent into selected internal hemorrhoidal tissue to promote vessel closure, fibrosis, and tissue fixation.

Use in hemorrhoids

After anoscopic identification, a clinician injects a chosen sclerosant into internal tissue above the dentate line. It may be considered for bleeding-predominant or lower-grade internal disease when anatomy, medicines, or other factors make an office injection appropriate. Agent and technique differ. [1]

Most people leave after the procedure with instructions about bowel movements, activity, expected spotting, and warning signs. Pain, bleeding, thrombosis, and rare abscess are possible complications. [1]

Clinical detail

Sclerotherapy does not remove a substantial external component and may not adequately correct advanced prolapse. Symptoms may recur and repeat treatment or another procedure may be needed. Evidence for one agent or technique should not be generalized to all formulations.