Acute Thrombosed External Hemorrhoid Management (ASCRS 2024)

Algorithm Steps

1. ▶

   Start

   Acute Thrombosed External Hemorrhoid

   Painful perianal mass with acute onset

   1. ●

      Action

      Clinical Assessment

      History and examination

      • Sudden onset perianal pain
      • Palpable, tender perianal mass
      • Blue/purple discoloration
      • DETERMINE:
      • - Duration of symptoms (critical)
      • - Severity of pain
      • - Prior hemorrhoid history
      • - Anticoagulation status
      • - Signs of necrosis/ulceration
      1. ●

         Action

         Physical Examination

         Confirm diagnosis

         • External hemorrhoid: Below dentate line
         • Single or multiple
         • Tense, tender, bluish mass
         • May have overlying skin necrosis
         • Assess for gangrene (rare)
         • Digital rectal exam if tolerated
         • Rule out abscess, fissure, fistula
         1. ◆

            Decision

            Signs of Gangrene/Necrosis?

            Urgent intervention needed

            • Black discoloration
            • Foul odor
            • Surrounding cellulitis
            • Systemic symptoms
            1. ⚠

               Warning

               Urgent Excision

               Do not delay for necrotic tissue

               • Excise all necrotic tissue
               • May need wider excision
               • Consider antibiotics
               • IV antibiotics if cellulitis/sepsis
               • Close follow-up
               1. ●

                  Action

                  Post-Excision Care

                  Wound care and recovery

                  • Sitz baths starting day 1
                  • Keep wound clean
                  • Oral analgesics PRN
                  • High-fiber diet, stool softeners
                  • Return if bleeding, fever, increasing pain
                  • Wound heals in 2-3 weeks
                  1. ●

                     Action

                     Follow-Up and Prevention

                     Long-term management

                     • Follow-up in 2-4 weeks
                     • Assess wound healing
                     • Recurrence rate: 10-15%
                     • PREVENTION:
                     • - High-fiber diet (25-30g/day)
                     • - Adequate hydration
                     • - Avoid straining
                     • - Regular exercise
                     • Consider hemorrhoidectomy if recurrent
                     1. ✓

                        Outcome

                        Outcomes

                        Prognosis

                        • Excision: Faster pain relief, lower recurrence
                        • Conservative: Resolves in 7-10 days
                        • Recurrence: 10-15%
                        • Consider formal hemorrhoidectomy if recurrent
            2. ◆

               Decision

               Symptom Duration?

               Key decision point for management

               • <72 hours: Excision preferred
               • >72 hours: Consider conservative if improving
               1. ●

                  Action

                  Excisional Hemorrhoidectomy

                  Optimal within 72 hours

                  • Local anesthesia (1% lido + epi)
                  • Elliptical incision over clot
                  • EXCISE entire clot AND overlying skin
                  • Incision alone has higher recurrence
                  • Leave wound open (no sutures)
                  • Hemostasis with pressure/cautery
                  • Can be done in office/ED
               2. ●

                  Action

                  Conservative Management

                  For >72h if symptoms improving

                  • Sitz baths 3-4x daily (warm water)
                  • Topical analgesia (lidocaine gel)
                  • Oral analgesics (NSAIDs, acetaminophen)
                  • Stool softeners (docusate)
                  • Fiber supplementation
                  • Avoid straining
                  • Topical nifedipine/diltiazem (off-label)
                  • Resolution in 7-10 days typically
                  1. ◆

                     Decision

                     Improving with Conservative Rx?

                     Reassess in 48-72 hours

                     1. ●

                        Action

                        Delayed Excision

                        If not improving or worsening

                        • Still beneficial even after 72h
                        • For persistent severe pain
                        • For enlarging thrombosis
                        • For ulceration/bleeding
                        • Same technique as early excision