Rectal prolapse in the horse is associated with conditions causing tenesmus (straining). These may include dystocia, constipation, neoplasia, [[Alimentary System Foreign Body - Horse|foreign body obstruction]], urethral obstruction or diarrhoea. Occasionally there is no apparent underlying cause. | Rectal prolapse in the horse is associated with conditions causing tenesmus (straining). These may include dystocia, constipation, neoplasia, [[Alimentary System Foreign Body - Horse|foreign body obstruction]], urethral obstruction or diarrhoea. Occasionally there is no apparent underlying cause. |