Medical Conditions

  • Hemophilia A & B are the most common of the inherited blood clotting disorders in dogs. It is the result of a spontaneous mutation of the specific genes that causes a deficiency of blood clotting.

  • Hepatic microvascular dysplasia is an inherited abnormality of the liver. In affected dogs, the microscopic blood vessels within the liver are underdeveloped or absent. This decreases blood flow within the liver, causing atrophy (a decrease in size) of the liver and its cells. The liver is less capable of processing toxins and producing proteins that are needed for growth and development.

  • Histoplasmosis is a chronic, non-contagious fungal infection caused by the soil-dwelling fungus Histoplasma capsulatum. Histoplasma capsulatum is found globally and may infect both humans and animals. However, histoplasmosis is uncommon to rare in all but dogs and cats.

  • Horner's Syndrome is a common neurological disorder of the eye and facial muscles, caused by dysfunction of the sympathetic nervous system.

  • A hygroma is a fluid-filled swelling surrounded by a thick capsule of fibrous tissue that develops under the skin. Hygromas are typically not painful. They can form over any bony prominence on the dog’s body, such as the side of the hock (ankle) joint or over the side of the hip, but they are most commonly found over the elbow.

  • Hypertension is the medical term for high blood pressure. A cat is generally thought to be hypertensive when its systolic blood pressure is above 175 mm Hg.

  • Cats have two thyroid glands, which are located in the neck and play a vital role in regulating the body's metabolic rate. Hyperthyroidism is characterized by the overproduction of thyroid hormone and a subsequent increase in metabolic rate. This disease is common in older cats.

  • Hypocalcemia means that the level of calcium in the bloodstream is low. Calcium is an important electrolyte within the body, and is needed for normal function of muscles and nerves. Calcium concentrations in the blood are usually regulated very closely but occasionally the control mechanism is impaired and may result in low blood calcium concentrations.

  • 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. In some situations, the normal control of body potassium concentration is lost, resulting in depletion of potassium and low blood potassium concentrations.

  • Ibuprofen is a commonly used NSAID and is used to treat fever, pain, and inflammation in humans. Ibuprofen poisoning occurs when a cat ingests a toxic dose of ibuprofen, either through misuse or by accident. Ibuprofen poisoning causes many different clinical signs because many different organ systems can be affected. Most commonly, cats show signs related to kidney problems.