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An allergy occurs when the cat's immune system overreacts or is hypersensitive to foreign substances called allergens. There are four main types of allergies in cats, namely flea allergy, atopic dermatitis (atopy), food allergy, and contact allergy. They share common physical expressions and signs in cats, and each has unique features.
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Allopurinol is an oral medication typically used to prevent uric acid and calcium oxalate stones in dogs. It is also used off-label to treat leishmaniasis and gout in dogs and other species. Side effects are uncommon but may involve stomach upset. Caution must be taken when allopurinol is used in conjunction with certain other medications. It should not be used in pets with liver or kidney dysfunction or in red-tailed hawks.
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The anal sacs are two small pouches located on either side of the anus. The walls of the sac produce a foul-smelling fluid that is released when a cat passes a bowel movement. The anal sacs or their ducts can become inflamed or infected due to a variety of causes. Most cats will respond well to pain relief medications and antibiotics. If a cat has several episodes of anal sac disease, and dietary changes and supplements or medication do not relieve the problem, the anal sacs can be removed surgically.
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Anal sac disease is a common problem in dogs that can be very uncomfortable or painful. Signs to watch for, diagnosis, and treatments, including identifying and managing underlying causes are outlined in this handout.
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Anal sac tumors grow quickly and have a moderate risk of spreading to other parts of the body. Depending on the tumor’s size, your pet could develop signs of straining to defecate or produce thin ribbon-like stool. An increased calcium level in the blood is consistent with anal sac tumors, which can cause other signs and result in kidney failure. The best and most well-described local treatment for the primary tumor is surgery. Radiation and chemotherapy may be considered if there is evidence of spread.
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Anaplasmosis is a tick-borne disease caused by the infectious bacterial organism Anaplasma phagocytophilum. It is transmitted through bites of the deer tick (also known as the black-legged tick) and the Western black-legged tick. A lesser form of anaplasmosis is caused by Anaplasma platys and is transmitted by the brown dog tick. Dogs with anaplasmosis often have many of the same symptoms as those with Lyme disease, and infection with both agents (co-infection) is not uncommon.
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Anisocoria is a condition in which the pupils of the cat's eyes are different sizes. Anisocoria is a symptom of an underlying condition or disease that needs to be identified and treated. Prognosis is guarded pending the diagnosis and treatment. Blindness may occur as a result of the underlying condition.
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Anisocoria is a condition in which the pupils of the eyes are different sizes; one pupil is larger than the other. Anisocoria is a symptom of an underlying condition or disease that needs to be identified and treated. Prognosis is guarded pending the diagnosis and treatment. Blindness may occur as a result of the underlying condition.
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Anthrax is a bacterial infection that rarely affects cats. It is not a new infection but has been revisited due to concerns about bioterrorism. Infection in cats usually occurs through ingestion of infected carcasses, causing clinical signs such as vomiting, diarrhea, and swelling of the face and neck. Treatment is highly effective in the early stages of infection.
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Anthrax is a bacterial infection that can affect dogs if exposed to large amounts of bacterial-produced spores such as by terrorist attack or ingesting large quantities from infected meat. The organism that causes anthrax, Bacillus anthracis, produces spores that are resistant to typical disinfection methods and heat. These spores can last up to 40 years in the environment. Anthrax is usually spread through inhalation or ingestion of spores from infected meat, although cutaneous exposure can occur. Symptoms depend on the type of exposure and can include: black skin pustules, pneumonia, acute gastroenteritis with hemorrhagic vomiting and diarrhea, oral ulcerations, fever, weight loss, swelling of the neck, face and head and ultimately sepsis and death if not treated. Treatment requires antibiotics and can be highly effective in early stages. There currently is no canine vaccine.