Anal fissure


The anal fissure is a tear in the very sensitive skin of the anus. An anal fissure is diagnosed and treated by ZweiChirurgen at our centre for proctology in Basel, Zurich and Liestal in Switzerland.

This tear usually develops due to hard stool during phases of constipation. Typical symptoms are intense pain and bleeding during bowel openings. 95% of anal fissures heal on their own. The therapy consists of local and systemic analgesia, reduction of the sphincter muscle tonus and the elimination of risk factors (e. g. constipation). Chronic anal fissures without healing after three months should undergo surgical excision.

  • Conservative treatment
  • Surgical debridement of the fissure
  • Surgical resection of the fissure
  • Relaxation of the sphincter muscle using muscle injections

Outpatient treatment in our practice OR


Anal fissure graphical representation