Educational Articles

Medical Conditions

  • Hemorrhagic gastroenteritis (HGE) is an acute disorder of dogs characterized by vomiting and bloody diarrhea.

  • 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.

  • A hernia occurs when one part of your body or part of an organ protrudes through a gap or opening into another part of the body. Many types of hernias occur in the abdominal area. Hiatal hernias, also known as diaphragmatic hernias, form at the opening (hiatus) in the diaphragm where the food tube (esophagus) joins the stomach.

  • Hip dysplasia is a deformity of the hip that occurs during growth. The hip joint is a "ball and socket" joint. During growth both the "ball" (the head of the femur or thighbone) and the "socket" in the pelvis (acetabulum) must grow at equal rates.

  • 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.

  • Horner's syndrome is a common neurological disorder of the eye and facial muscles. The condition usually occurs suddenly.

  • Acute moist dermatitis or "hot spots" are a common skin disorder in dogs. "Hot spots" can appear suddenly and become large red, irritated lesions in a short time. Hot spots are the result of intense chewing and licking. The inciting cause is often an insect bite.

  • Hydrocephalus literally means “water on the brain.” The “water” is actually an excess of cerebrospinal fluid (CSF) that has leaked inside the skull, leading to brain swelling. CSF is the fluid that surrounds the brain and spinal cord, providing both nutrients and protection. Buildup of CSF can occur in the brain if the flow or absorption of CSF is blocked or too much CSF is produced by the body. This leads to increased pressure within the skull that presses on the sensitive brain tissues. Increased intracranial pressure can lead to permanent, irreversible brain damage and death.

  • 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.