Dog Disease Glossary

Disease List

Disclaimer:
This Glossary provided in this blog post is for informational purposes only and is not intended to be a substitute for professional veterinary advice, diagnosis, or treatment. Always seek the advice of your veterinarian or other qualified animal health provider with any questions you may have regarding your pet’s medical condition. Never disregard professional veterinary advice or delay in seeking it because of something you have read on this blog.

Pancreatitis is swelling in your dog’s pancreas. It’s common in dogs who eat a lot of high-fat foods, especially if they eat a lot of it at one sitting. Your dog can have really obvious signs such as vomiting, dehydration, fever, and belly pain, but some dogs may only seem listless and have diarrhea.

Source: https://www.webmd.com/pets/dogs/dog-pancreatitis-symptoms-and-treatment

Giardiasis is a common parasitic infection that can cause diarrhea in dogs. It is caused by an intestinal parasite called Giardia, which can be found in feces-contaminated soil, food and water.

The most common clinical signs of Giardiasis include: 

  • Acute or sudden diarrhea  

  • Soft or watery stool with mucus and a foul odor 

  • Abdominal discomfort

Source: https://www.vet.cornell.edu/

Hypoadrenocorticism, also known as Addison’s disease is is caused by a lack of cortisol and aldosterone hormones. This deficiency contributes to general signs of illness, and the condition may become life-threatening if the hormone levels drop too low. The most common cause of Addison’s disease is hereditary, and it causes the dog’s immune system to destroy their adrenal glands.

The signs can wax and wane, or be vague and non-specific, and they can include any of the following:  

  • Lethargy 

  • Loss of appetite 

  • Vomiting 

  • Diarrhea 

  • Weight loss  

  • Increased thirst and urination 

  • Trembling 

  • Weakness 

  • Dehydration

Source: https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information/addisons-disease

Clostridium in dogs is a bacterial infection that causes severe diarrhea, that spreads throughout your dog’s intestinal tract and is spread through contact with an infected dog’s feces. The symptoms are:

  • Diarrhea that can become severe
  • Dehydration
  • Abdominal cramps
  • Elevated fever
  • Vomiting
  • Lethargy

Source: https://wagwalking.com/condition/clostridium-

Exocrine pancreatic insufficiency (EPI) is the inability to produce sufficient pancreatic enzymes needed to digest fats, carbohydrates, and proteins. The causes of EPI can be congenital (present from birth), inherited (genetic), or acquired as the result of pancreatic infection, inflammation, or injury.

Young adult dogs are often affected and have chronic diarrhea or very soft, bulky, fatty looking feces, excessive appetites, occasional vomiting, and gradual weight loss over a period of months. Because of the high level of fats in the stool, the hair coat around the anus and on the tail may appear greasy.

Source: https://vcahospitals.com/know-your-pet/exocrine-pancreatic-insufficiency-in-dogs

Acute hemorrhagic diarrhea syndrome (AHDS), also known as hemorrhagic gastroenteritis (HGE), is an acute (sudden) disorder of dogs characterized by vomiting and bloody diarrhea. Some dogs may have a painful abdomen, decreased appetite, lethargy, or fever.

The exact cause of AHDS / HGE remains unknown but there are several possible contributing factors, such as the bacteria Clostridium perfringens, dietary indiscretion (ingesting non-food items or different foods), immune-mediated disease, toxins, or pancreatitis. Stress, anxiety, and hyperactivity are thought to be possible contributing factors in many cases.

Source: https://vcahospitals.com/know-your-pet/hemorrhagic-gastroenteritis-in-dogs

Hookworms are intestinal parasites that can cause inflammation in the dog’s intestine, as well as a life-threatening decrease of red blood cells (anemia). Anemia is most common in puppies but can occur in adult dogs.

The most significant clinical signs are related to intestinal distress and anemia. Some dogs experience significant weight loss, bloody diarrhea, dull and dry coat, skin irritation and itching or, in puppies, failure to grow properly.

Source: https://vcahospitals.com/know-your-pet/hookworm-infection-in-dogs

Inflammatory bowel disease (IBD) is a chronic condition (greater than three weeks) caused by inflammation in the gastrointestinal tract. The cause of IBD is unknown but is believed to be a combination of factors which may include genetic predisposition, abnormal immune response to food components (dietary antigens) and alterations in gut flora (dysbiosis).

Signs may vary and be intermittent and may include:

  • Weight loss
  • Vomiting
  • Diarrhea
  • Flatulence
  • Decreased or increased appetite

Source: https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information/inflammatory-bowel-disease-ibd

Irritable bowel syndrome (IBS) in dogs is a condition where the intestinal muscles don’t function normally, and it causes diarrhea and constipation. Each episode can come on quickly, and the dog can have a painful abdomen, gas, and borborygmi, which is a “gas bubble” sound in their stomach.

Irritable bowel syndrome in dogs is a primary motility disorder. The root of the abnormal motility seen in IBS can be food intolerance or stress-related.

Source: https://www.petmd.com/dog/conditions/digestive/c_dg_irritable_bowel_syndrome

Immune Mediated Hemolytic Anemia (IMHA) is a disease where the body’s immune system destroys its own red blood cells. This often leads to severe anaemia and poor oxygen delivery to multiple organs that can be triggered by different factors including infectious organisms, tumours and even drugs. When a cause is not found, the disease is designated idiopathic (aka primary) IMHA; this means that without an obvious underlying trigger, your pet’s immune system has started destroying its own red blood cells.

The clinical signs of IMHA include:

  • Lethargy/Lack of energy

  • Exercise intolerance

  • Pale gums that are also usually yellow (jaundice)

  • Inappetence

  • Vomiting

  • Dark orange to brown urine

  • Shortness of breath/Fast breathing

  • Increased heart rate

  • Weakness/Collapse

Source: https://www.vetspecialists.co.uk/fact-sheets-post/imha-immune-mediated-haemolytic-anaemia-fact-sheet/

Protein-losing enteropathy (PLE) is not a specific disease, but is described as a group of diseases that cause the loss of proteins from the bloodstream into the gastrointestinal (GI) tract.

Diarrhea is one common sign of PLE. The diarrhea may come and go, may be continuous, or may be the consistency of water. But some dogs with PLE have normal stools. Dogs will also have a difficult time holding their weight, and they may become lethargic.

Source: https://vcahospitals.com/know-your-pet/proteinlosing-enteropathy-ple-in-dogs#:~:text=Protein%2Dlosing%20enteropathy%20(PLE)%20is%20not%20a%20specific%20disease,system%20can%20all%20cause%20PLE.

Thrombocytopenia is a decrease in the number of blood platelets, also known as thrombocytes, circulating in the blood. Severe or prolonged blood loss, increased internal destruction of platelets, or impaired bone marrow production can lead to a short-term (acute) or long-term (chronic) deficiency of platelets.

Severe thrombocytopenia may cause abnormal bleeding that shows up as petechiae (small red spots on the skin or gums), ecchymoses (larger bruises), bloody urine, vomit, or stool, and melena (tar-colored stool).  The blood loss can cause anemia (low red blood cell count), resulting in pale gums, increased breathing rate, and weakness. Many dogs with thrombocytopenia will not show any obvious signs, which is why blood testing is so important.

Source: https://vcahospitals.com/know-your-pet/thrombocytopenia-in-dogs

Canine parvovirus infection is a highly contagious disease caused by canine parvovirus type 2 (CPV-2), which attacks white blood cells and the gastrointestinal tract.

The signs of parvovirus infection vary from dog to dog, depending on the severity of the infection. These are some important signs to watch out for:

  • Lethargy
  • Loss of appetite
  • Vomiting
  • Severe, often bloody, diarrhea
  • Abdominal pain and bloating
  • Fever or low body temperature (hypothermia)

Source: https://www.avma.org/resources-tools/pet-owners/petcare/canine-parvovirus

Hemangiosarcoma is an aggressive form of cancer that develops from blood vessels. The most common types are:

  • Splenic: This is the most common type in dogs, this cancer invades the spleen.

  • Cardiac:  This cancer typically forms in the right atrium, one of the heart’s chambers.
  • Skin: This cancer affects the skin (cutaneous or dermal) and under the skin (subcutaneous).

Symptoms of hemangiosarcoma vary depending on the body systems involved. Lethargy and weakness can be found in all three types above, with particular symptoms to each one, like:

Pale gums and distended abdomen in Splenic type; Difficulty breathing and vomiting in Cardiac type; Red or purple mass, usually in areas of little fur such as the abdomen or legs, bruising around the tumor and bleeding from the tumor in Skin type.

Source: https://www.petmd.com/dog/conditions/cancer/hemangiosarcoma-dogs

Pythiosis is a disease caused by an algae-like fungal organism called Phythium insidosum, can make dogs extremely sick. Pythium insidiosum thrives in ponds, swamps, wetlands, and bayous. 

Dogs typically contract Pythiosis through swimming, wading in, or swallowing infected water. The pythium zoospores in the water may also enter the dog’s system through small cuts on their paws or skin.

There are two forms of Pythiosis:

  • Gastrointestinal. The symptoms are: wasting (involuntary weight and muscle loss), fever, vomiting, diarrhea (often containing blood), trouble defecating, abdominal pain, and enlarged lymph nodes.
  •  
  • Cutaneous. This develops as lesions on dogs’ bodies, generally on the legs, tail, head, neck, rectal area, or thigh. Lesions are often itchy, and dogs can hurt themselves by scratching them.

Source: https://www.petmd.com/dog/conditions/cancer/hemangiosarcoma-dogs