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Medical Conditions

  • There are four major hormonal diseases in ferrets. This handout covers adrenal gland disease and diabetes mellitus. Adrenal gland disease occurs in a large number of ferrets in North America, while diabetes mellitus is a rare, but important problem.

  • Horner's syndrome is a common neurological disorder of the eye and facial muscles and can occur suddenly. Horner's syndrome is caused by dysfunction of the sympathetic nerves of the eyes and surrounding facial muscles. It may be due to an injury such as a bite wound or blunt trauma, a tumor, intervertebral disc disease, or middle or inner ear disease. If an underlying cause can be identified, treatments will target that issue; however, many cases spontaneously recover after some time.

  • Canine hot spots are red, inflamed skin lesions that appear quickly, ooze, and may contain pus. They are the result of a dog excessively scratching, licking, or chewing at an itch. There are several possible underlying causes of the itch and it is crucial to determine what it is to successfully treat the problem. This handout explains these possible causes and the treatment(s) required to resolve them.

  • Pain can be difficult to detect in older dogs. It is important for dog owners to recognize subtle signs of pain in their dog, such as slowing down on walks, unwillingness to play, reluctance to sit or stand, limping or weight shifting, and sensitivity to touch on being picked up. If any of these behaviors are observed, your dog should be evaluated by your veterinarian and a pain management plan devised.

  • Hydrocephalus is an excess of cerebrospinal fluid (CSF) that has leaked inside the skull, leading to brain swelling. There are two main types of hydrocephalus in dogs: congenital and acquired. Small, miniature, toy, and brachycephalic breeds seem to be more affected. Signs, diagnosis, and treatment are outlined. Your veterinarian will discuss your pet's prognosis and treatment options based on its individual condition.

  • Hygromas are fluid-filled non-painful swellings that develop suddenly over a bony prominence. They are the body’s reaction to repetitive trauma and usually a result of laying too frequently on hard surfaces. The best treatment is to ensure the prominence affected is well padded to allow the hygroma to recede. This can be accomplished by appropriate padding in the dog’s living quarters and by directly padding the affected area if possible. Rarely, hygromas become infected requiring antibiotics. Very few will need surgery to manage them. This would be recommended on an individual case basis.

  • Hyperlipidemia refers to elevated levels of lipids (fats) in the bloodstream and can be due to several causes. Often times there are no clinical signs. Hyperlipidemia is confirmed using a 12-18 hours fasting sample. The pet's medical history and a search for an underlying cause is important for its treatment. If no underlying cause is found, your pet will need to start eating a low-fat, high-fiber diets, and may be started on the appropriate medications and supplements.

  • The term hypocalcemia is used when the level of calcium in the blood is lower than normal. Calcium levels are controlled by a pair of parathyroid glands. Low calcium levels are associated with a number of serious disorders including antifreeze poisoning, inflammation of the pancreas, kidney failure, and parathyroid gland failure. In nursing female dogs, heavy milk production can lead to hypocalcemia and may result in seizures. Pets with hypocalcemia may show signs of muscle twitching, loss of appetite, weakness, and listlessness. Your veterinarian will perform diagnostic tests which may include testing total calcium, ionized calcium, albumin, and parathyroid hormone levels. Primary hypoparathyroidism can be managed with a medication plus nutritional supplements containing vitamin D and calcium.

  • Hypokalemia is a term that refers to a low blood concentration of potassium. Potassium is an important electrolyte within the body and is vital for the normal function of muscles and nerves. Mild to moderate hypokalemia often does not cause clinical sigs, but severe hypokalemia can result in generalized muscle weakness, lack of appetite, and some dogs may become constipated. The underlying cause of hypokalemia is often chronic kidney failure. Hypokalemia and its associated clinical signs may be quickly corrected by potassium supplementation. Depending on the cause, it may be necessary to continue supplementing potassium permanently.

  • Hypothyroidism is an abnormality of the thyroid gland leading to a reduction in the dog’s metabolic state. This can cause many systemic changes including weight gain, hair loss, lethargy, and susceptibility to infections – most noticeably of the skin and ears. Diagnosis is made by a series of blood tests. Treatment is oral thyroid hormone replacement and is lifelong. Clinical signs and blood hormone levels must be monitored regularly as thyroid hormone requirements can change.