Histiocytic Ulcerative Colitis in Dogs

• Frequent straining and prolonged motions to pass feces  but with limited results
• Diarrhea that is bloody and contains mucous throughout the sample
• Increasing need to defecate 
• Soft unformed feces that are not normal
• Pain when passing stool 
• Weight loss in later stages of the disease 
• Lack of appetite
• Passing of gas (flatulence)

Types

• Although it primarily affects young Boxers it has also been reported in French Bulldogs, Alaskan Malamutes, English Bulldogs and Doberman Pinschers
• Colitis is a related disease and has similar symptoms but is a lot milder and easier to treat with diet 
• The resultant diarrhea causes other problems such as redness and irritation around the anus
• The cause is unknown but a possible cause could be from a genetic basis
• Inflammation causing ulceration in the intestines is the result of the disease 
• Intestinal cramping of the lower intestine causes discomfort for your dog

This disease becomes apparent as your dog’s symptoms become clear. Your dog seems to be having trouble defecating, or having control of his bowel movements. This means there may be accidents in the home as your dog cannot control sudden attacks of diarrhea. The feces will be soft and contain pus and/or blood, indicating that something is not right. If the bowel movement is fresh the blood will be red, whereas if it has had a chance to dry, it will appear black. Once the symptoms of continual painful passing of loose stools becomes apparent, then a trip to your veterinarian is the most important thing to do. 

The veterinarian will check out the clinical signs by asking you about your dogs behavior, and then may do an ultrasonography test and perform a large bowel biopsy. Another diagnostic tool is to do a colonoscopy of the intestines . The stress your dog is under will be obvious so prompt treatment is required. The pain of the muscle cramps will affect your dog’s normally happy nature, and as your dog is usually not one to complain, to see him in pain or depressed can be upsetting.

It depends on the severity of the disease as to the appropriate treatment. Young dogs who are only mildly affected usually only need dietary changes and a course of medication to overcome the condition. Medication in the form of sulfasalazine and corticosteroid therapy is the chosen way to treat HUC. Diets that include high fibre should be avoided as it will aggravate the condition. Your veterinarian can advise about dietary changes and how to include just moderately fermentable fibre supplements to maintain your dog’s health. He will also discuss with you the possibility of the progressive nature of the disease and even if your dog responds well to treatment, that there may be reoccurrences later on in life. 

Other medications may include the use of antimicrobials and anti-inflammatory drugs. Diet plays a major role in the health of your dog and even once he is healthy, maintaining a varied nourishing diet is important. Your dog is genetically geared to try to eat many things that may not be good for them, essentially they will scavenge if they can. In a country setting, this includes eating anything they find such as half rotten carcasses of birds or small animals, so an awareness of this habit is advisable.