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Facial nerve paralysis* is most commonly caused in dogs by trauma, otitis media, or as an idiopathic condition. Signs include an inability to blink, drooping of the ear, and drooping of the lips on the affected side, although in chronic conditions fibrosis occurs and the ear and lips may appear to be in an abnormal position.[60]
Chocolate poisoning symptoms can last up to 72 hours. PetMD offers this chocolate toxicity meter to gauge your dog’s level of poisoning, but it’s still best to see a vet right away. For a true life story, read our post, My Dog Ate Chocolate. Here’s What Happened Next.
Trapped Neutrophil Syndrome* is an autosomal recessive disease which results in mature neutrophils being unable to migrate from the bone marrow into the blood. Affected pups have chronic infections and fail to thrive. Other symptoms can include stunted growth and a ferret like facial appearance.[53] The disease is common in Border collies.[54]
Echinococcosis is a parasitic disease caused by eating or drinking food and water contaminated with a specific type of tapeworm eggs or through contact with an infected animal. Dogs become infected by eating tissue of an infected animal. Dogs rarely show any signs of disease, but if they are infected with a large number of worms, dogs can have diarrhea and enteritis.
Ventricular septal defect* is a hole in the division between the heart ventricles (interventricular septum). It is a congenital heart disease in dogs. There usually are no signs in dogs except for a heart murmur. However, a large defect can result in heart failure or in pulmonary hypertension leading to a right-to-left shunt.[49]
Pemphigus is an uncommon autoimmune skin disease. The most common form in dogs is pemphigus foliaceus, which manifests as erosions and crusting of the skin and mucocutaneous junctions. Pemphigus vulgaris is more rare and manifests as blister-like lesions in the mouth and at mucocutaneous junctions. Bullous pemphigoid is most commonly seen in Dobermanns and Collies and appears as a scald-like lesion of the groin.[81]
Atopy* is an allergy to a substance with which the dog is not necessarily in direct contact. It is a type I hypersensitivity to a substance that is inhaled or absorbed through the skin. Up to 10 percent of dogs are affected.[77] It is common in dogs, especially seen in breeds such as Labrador Retrievers, Golden Retrievers, and Shih Tzus. The most common symptom is itching. Affected areas include the underside, the face, the feet, and the ears.[78]
Craniomandibular osteopathy is a hereditary disease in West Highland White Terriers and also occurs in other terrier breeds. It is a developmental disease in puppies causing extensive bony changes in the mandible and skull. Signs include pain upon opening the mouth.[40]
Since the disease was first detected in 2012 in the UK the number of cases of Alabama dog rot in dogs has risen. The most serious outbreak was in the New Forest region of Hampshire but there have also been reported cases in several other counties, with the most recent cases reported Gloucestershire, Monmouthshire, Devon, Dorset, Cheshire, Warwickshire, Greater Manchester and Worcestershire.
Conjunctivitis* is inflammation of the conjunctiva. In dogs it is most commonly caused by mechanical irritation (such as by entropion, ectropion, or trichiasis), allergies, and keratoconjunctivitis sicca. Any bacterial infection is usually secondary.[70]
Brachycephalic airway obstructive syndrome is a condition of brachycephalic (short-nosed) dogs, characterized by the presence of stenotic nares, elongated soft palate, narrow trachea, collapsed larynx, and everted laryngeal saccules. Signs include difficult and noisy breathing. Surgical options are available.[185]
Laryngeal paralysis is unilateral or bilateral paralysis of the larynx. In dogs it can be congenital, seen in the Bouvier des Flandres, Bull Terrier, Dalmatian, Rottweiler and Huskies, or an acquired, idiopathic disease, seen in older Labrador Retrievers, Golden Retrievers, St. Bernards, and Irish Setters. Signs include change in voice and difficulty breathing.[61]
Jump up ^ Eubig P, Brady M, Gwaltney-Brant S, Khan S, Mazzaferro E, Morrow C (2005). “Acute renal failure in dogs after the ingestion of grapes or raisins: a retrospective evaluation of 43 dogs (1992–2002)”. J. Vet. Intern. Med. 19 (5): 663–74. doi:10.1892/0891-6640(2005)19[663:ARFIDA]2.0.CO;2. PMID 16231710.
Jump up ^ Raghavan M, Knapp DW, Dawson MH, Bonney PL, Glickman LT (2004). “Topical flea and tick pesticides and the risk of transitional cell carcinoma of the urinary bladder in Scottish Terriers”. J. Am. Vet. Med. Assoc. 225 (3): 389–94. doi:10.2460/javma.2004.225.389. PMID 15328714.
Sick sinus syndrome* is most commonly seen in female Miniature Schnauzers. It is characterized by sinoatrial node dysfunction and may include atrioventricular node disease and bundle branch block. Electrocardiogram findings include sinus bradycardia, sinus arrest, sinoatrial heart block, and atrial tachycardia. The major clinical sign is fainting (syncope).[49]
Ticks* are an external parasite of the dog and can spread diseases such as Lyme disease, Rocky Mountain spotted fever, babesiosis, and ehrlichiosis. They can also cause a neurological disorder known as tick paralysis.[32]
Humans can also spread the virus by touching a dog or item contaminated with the virus and then transferring that to other dogs, says Weese, which is why it’s so important for dog owners to wash their hands after contact with a sick animal.
It is suspected the disease spreads from muddy and wooded areas – dog owners who do walk their dogs in these places are advised to wash off any mud as soon as possible, and of course, keep close control of their dogs at all times to monitor where they go.
Jump up ^ Meurs KM1, Lahmers S, Keene BW, White SN, Oyama MA, Mauceli E, Lindblad-Toh K. A splice site mutation in a gene encoding for PDK4, a mitochondrial protein, is associated with the development of dilated cardiomyopathy in the Doberman pinscher. Hum Genet. 2012 Aug;131(8):1319-25.
Histoplasmosis, caused by Histoplasma capsulatum, is a disease with a worldwide distribution. In the United States it is mainly found in the Mississippi and Ohio River areas, most commonly in bird and bat feces. Signs include weight loss, cough, fever, enlarged lymph nodes, and gastrointestinal symptoms.[11] Coccidioidomycosis, caused by Coccidioides immitis, is found in arid and semi-arid regions of Central and South America, Mexico, and southwestern United States. Signs include weight loss, fever, cough, enlarged lymph nodes, and lameness.[12][13]

People who become infected with leptospirosis might not have any signs of the disease. Others will have nonspecific flu-like signs within 2-7 days after exposure. These symptoms usually resolve without medical treatment, but can reappear and lead to more severe disease.
Osteoarthritis*, also known as degenerative arthritis, is a common condition in dogs characterized by progressive deterioration of articular cartilage in the joints of the limbs. It can cause a great deal of pain and lameness. Treatment options include medications such as NSAIDs, corticosteroids, and joint fluid modifiers such as glycosaminoglycans. Other treatments include surgery, massage, warm compresses, chiropractic, and acupuncture.[35]
Patent ductus arteriosus* is one of the most common congenital heart defect in dogs around the world. It is inherited in toy and miniature Poodles, and seen commonly in German Shepherds, Pomeranians, Bichon Frises, and Malteses. Signs include a continuous heart murmur, bounding (strong) femoral pulse, tachypnea (increased breathing rate), dyspnea (labored breathing), and exercise intolerance.[49]
Canine parvovirus is an acute illness, which means that symptoms develop suddenly, usually within 3–10 days of exposure. In most cases, dogs that are infected with the virus do not develop the disease (called asymptomatic infection). Canine parvovirus often is fatal in puppies. Sometimes, puppies collapse and die without showing prior signs of infection.
Certain types of dog or puppy adoptions, like international pet adoption, might not be suitable for your family because of the risk for disease. This is particularly true if young children, pregnant women, or persons with weak immune systems are living in the household. Persons with weak immune systems may include the elderly or people with an illness such as diabetes or HIV/AIDS, or those undergoing chemotherapy.
There has been some speculation that walking dogs in particular areas of the countryside may be a contributing factor, but the Forestry Commission has yet to warn of any specific sites being dangerous, reassuring dog owners by saying “Many thousands of dogs are walked in the countryside every day and it is important to remember that only a very small number of dogs have been affected.”
Cushing’s syndrome, also known as hyperadrenocorticism, is characterized by an increase in glucocorticoids secreted by the adrenal glands. About 85 percent of cases are caused by a tumor in the pituitary gland, while 15 percent are caused by an adrenal tumor. The pituitary gland produces a hormone that signals the adrenal gland to produce cortisol; a tumor can cause it to produce the adrenal-stimulating hormone even when it is not needed.[115][116] Signs include increased appetite, increased drinking and urination, a pot-bellied appearance, muscle weakness, and lethargy.[115] Cushing’s can be caused by overuse of steroid medications; in some cases, stopping the medication is enough to solve the problem.[115] Diagnosis can be difficult as there are no tests with both high sensitivity and specificity.[117] Treatments inclulde mitotane, trilostane,[118][119] ketoconazole, or selegiline.[120][121] Surgery is used in some cases of adrenal tumors.[122]
Jump up ^ Knight, A. P.; Walter, R. G. (2003). “Plants Affecting the Digestive System”. A Guide to Plant Poisoning of Animals in North America. International Veterinary Information Service. Retrieved 2007-01-07.
Jump up ^ Probst, Sarah (1999). “Blastomycosis–Fungal Disease Common in Outdoor Dogs”. Pet Columns. UIUC College of Veterinary Medicine. Archived from the original on 2015-02-05. Retrieved 2007-08-18.
You may not think you need one, but your dog does. “Don’t skimp on a in-depth vet exam every year,” advises Kerns. Since “dogs age on an accelerated schedule compared to us,” she says, serious illness can take hold within a year, so early detection is key. The exam should include a complete blood count, a blood-chemistry panel, a thorough dental check, and a vaccination review to ensure that your dog is up-to-date with rabies and other shots. Tip: Find a vet you can establish an easy relationship with. When you make your appointment, be sure the doc will set aside enough time to patiently answer all your questions.
“Some will get secondary infections with bacteria. Some dogs can die but it’s pretty uncommon. That’s more likely in dogs that already have other diseases: respiratory disease, heart disease or other things that make them more likely to get a serious illness,” he said.
Malignant histiocytosis (histiocytic sarcoma) is an aggressive cancer found primarily in certain breeds including the Bernese Mountain Dog, rottweiler, golden retriever and flat coated retriever. It is characterized by infiltration of the joints, lungs, spleen, lymph nodes, and other organs by malignant histiocytes.[6]
Alabama dog rot was first identified amongst greyhounds in the state of Alabama in the 1980s. After this first flair up, the number of reported cases dwindled and as no clinical research was carried out, the disease was almost relegated to history. Because no one has been able to determine what causes the disease, it is now only recognisable by its collection of clinical symptoms.
Some diseases and other health problems are common to both humans and dogs; others are unique to dogs and other animals. Dogs are susceptible to various diseases; similarly to humans, they can have diabetes, epilepsy, cancer, or arthritis.
How to treat: Vaccines can be administered regularly to prevent some types of kennel cough. If your dog catches kennel cough you should take him to your vet where he might be prescribed medications that will speed up the recovery process. Keep your pup away from other dogs (especially in public places where the illness can spread rapidly), and give him lots of rest. Once you see signs of recovery, take him for regular walks until he is himself again.
Vogt-Koyanagi-Harada syndrome is a condition seen in dogs characterized by uveitis (inflammation of the inside of the eye), poliosis (whitening of hair), and vitiligo (loss of pigment in the skin).[62]
Cancer is a class of diseases in which cells grow uncontrollably, invade surrounding tissue and may spread to other areas of the body. As with people, dogs can get various kinds of cancer. The disease can be localized (confined to one area, like a tumor) or generalized (spread throughout the body).
Pulmonic stenosis* is a congenital heart disease in dogs characterized by right ventricular outflow tract obstruction. Most commonly the narrowing occurs at the pulmonary valve but it can also occur below the valve (subvalvular) or above the valve (supravalvular). The most commonly affected breeds include terriers, Bulldogs, Miniature Schnauzers, Chihuahuas, Samoyeds, Beagles, Keeshonds, Mastiffs, and Bullmastiffs. Signs may include exercise intolerance, but often there is only a heart murmur.[49]
Congestive heart failure* is the result of any severe, overwhelming heart disease that most commonly results in pulmonary edema (fluid in the lungs), pleural effusion (fluid around the lungs), and/or ascites (fluid in the abdomen). It can be caused by the above two diseases, congenital heart defects such as patent ductus arteriosus, pulmonary hypertension, heartworm (Dirofilaria immitis) disease, or pericardial effusion. Signs depend on which side of the heart is affected. Left-sided heart failure results in rapid and/or difficulty breathing and sometimes coughing from a build-up of fluid in the lungs (pulmonary edema). Right-sided heart failure results in a large liver (congestion) and build-up of fluid in the abdomen (ascites), uncommonly fluid around the lungs (pleural effusion), or, rarely, peripheral edema.[51]
I love playing with my family. Running, jumping, swimming: it’s all great. But my favorite is fetch. For some reason, when we play fetch with my Humunga Stache, my family seems to have even more fun than usual. There’s lots of laughing and they take extra pictures of me. I don’t know why, but if it makes them happy, it’s fine with me!
Eye proptosis is a condition resulting in forward displacement and entrapment of the eye from behind by the eyelids. It is a common result of head trauma in dogs. Most commonly it occurs in brachycephalic (short nosed) breeds.[62]
Degenerative (myxomatous) mitral valve disease* is a common cause of congestive heart failure in dogs, especially small, older dogs.[48] The leaflets of the valve become thickened and nodular, leading to mitral valve regurgitation and volume overload of the left side of the heart. Cavalier King Charles Spaniels and Dachshunds have an inherited form of this disease.[49]
Jump up ^ Ruchinsky, Renee; et al. (2010). “Diabetes Management Guidelines for Dogs and Cats-page 7” (PDF). American Animal Hospital Association (AAHA. Archived from the original (PDF) on 5 March 2012. Retrieved 25 January 2011.(PDF)
My dog will all the sudden get a burst of energy and run so fast he can’t stop and he will run right into things. Now he does this exorcist thing with his head, turning it back violently, teeth chattering and trying to bite his ear kind of thing and will not let anyone near him at all. I think he is having seizures but I’m not sure. I need help. Anyone??
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On the other hand, acute kidney disease is largely preventable. Acute kidney disease is caused by a number of issues: poisoning, infection, or complication from medicines, to name a few. Symptoms are sudden and severe and can include fever, vomiting, change in water intake, change in appetite, and change in amount of urination.
What to look for: The signs of obesity might seem obvious, but having regular weight checks is important in order to keep records of your dog’s weight over time. It is important to recognize your dog’s weight gain early to give him the best chance possible for recourse.
Jump up ^ Carmichael, L. (2004). “Neonatal Viral Infections of Pups: Canine Herpesvirus and Minute Virus of Canines (Canine Parvovirus-1)”. Recent Advances in Canine Infectious Diseases. Archived from the original on 2006-08-18. Retrieved 2006-06-25.
Heart valve dysplasia (including mitral and tricuspid valve dysplasia) is a congenital heart abnormality in dogs. Dysplasia of the mitral and tricuspid valves – also known as the atrioventricular (AV) valves – can appear as thickened, shortened, or notched valves. Chordae tendineae are also usually abnormal.[49]
Welcome to the petMD Dog Symptom Checker, where you can easily search our 1,000+ dog health articles based on the symptoms your dog is experiencing. Simply select the area of the body that is being affected and then check off any appropriate symptom(s). Articles relevant to your query will appear below.
Dog treats are often given to pets as a reward for something they did or just to let them chew on a bone, which works their jaw muscles and helps keep their teeth clean.[63] Although dog treats carry high benefits for dogs’ teeth, they can also be a source of problems when given excessively. The human food treats are usually the ones that cause the most trouble for dogs.

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