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Dogs + Medical Conditions

  • Dogs can have hearing loss due to increasing age or chronic ear infections, or they may be born with a defect. Deafness in dogs can present some challenges, but overall they can have healthy, normal lives. Training is still possible by making some modifications and incorporating hand signals. It is important to take their deafness into account when considering their safety and ensure that they are never off leash on or near a street.

  • Lumbosacral disease, or cauda equina syndrome, is caused by the narrowing of the spinal canal and results in compression of the spinal nerve roots; pressure on the nerves that exit the spine cause the clinical signs. This pressure may be due to a narrowed spinal canal caused by arthritis, intervertebral disc herniation, an infection in the disc, trauma, congenital malformation, or a spinal tumor. Dogs with lumbosacral disease are in pain. If the clinical signs and radiographs suggest lumbosacral disease, advanced imaging such as MRI or CT is recommended to make a diagnosis. Treatment involves either conservative medical treatment or surgical intervention.

  • A luxating patella is a kneecap that moves out of its normal location, causing an affected dog to skip or hop on three legs. Many toy or small breed dogs, including the Maltese, Chihuahua, French Poodle, and Bichon Frise, have a genetic predisposition for a luxating patella. Surgery should be performed to prevent the development of arthritis or another knee injury.

  • Lymphocytic plasmacytic gastroenteritis is a form of inflammatory bowel disease. While the exact cause is not known, it is possible that the intestinal bacteria themselves may be involved in stimulating the immune response. Treatment may include nutrition management, immunosuppressive medications, and dietary supplementation of cobalamin, prebiotics, and probiotics.

  • Lymphoma is a cancer of the lymph nodes and lymphatic system. This cancer may be localized to one particular region, or may spread throughout the entire body. Lymphoma is a relatively common cancer, accounting for 15-20% of new cancer diagnoses in dogs. The prognosis for lymphoma varies, depending on various characteristics that can only be determined by specialized testing.

  • Lysosomal storage diseases are a rare collection of conditions that are inherited. Many of them are more prevalent in certain breeds and are seen in the first few months of life. Clinical signs vary depending on the type of disease, but commonly include failure to thrive, incoordination, vision loss, and seizure. Prognosis is usually poor for long-term survival.

  • While macadamia nuts are edible for humans, they are poisonous for dogs. Initial signs of macadamia nut poisoning include vomiting, fever, and lethargy, and will progress to incoordination, reluctance to use the rear limbs, inability to stand, joint stiffness, and muscle tremors. Macadamia nuts can also lead to pancreatitis.

  • Small intestinal bacterial overgrowth (SIBO) is a condition of the small intestine that results in increased numbers of bowel bacteria. The bacteria cause damage to the surface of the bowel so digested food cannot be absorbed, resulting in malabsorption of nutrients. Symptoms include chronic diarrhea and weight loss.

  • Mange is a parasitic skin disease caused by microscopic mites. Two different mange mites cause skin disease in dogs. One lives just under the surface of the skin, while the other resides deep in the hair follicles. Although both mites share similar characteristics, there are also important differences.

  • Sarcoptic mange is caused by a parasitic mite that burrows just beneath the surface of the skin, Sarcoptes scabiei. The mite feeds on material in and on the skin. It is also known as scabies and is a zoonotic disease or a disease transmissible from pets to people.