− | A history of ingestion of foreign material combined with clinical signs of abdominal pain, reduction in faecal output and dehydration is strongly suggested of a non-strangulating obstruction. Rectal examination may reveal the presence of a foreign body but this is often unremarkable. Affected horses are generally unresponsive to medical management. | + | A history of ingestion of foreign material combined with clinical signs of abdominal pain, reduction in faecal output and dehydration is strongly suggestive of a non-strangulating obstruction. Rectal examination may reveal the presence of a foreign body but this is often unremarkable. Affected horses are generally unresponsive to medical management. |