Siamese Health Issues

The Siamese is generally a long-lived, hardy cat that often reaches its mid-to-late teens or beyond, but the breed carries a handful of health conditions worth understanding before you adopt. The best known is progressive retinal atrophy, an inherited eye disease with a DNA test, alongside amyloidosis, a tendency to respiratory disease and asthma, dental disease, and certain cancers. This guide walks through each condition, the signs to watch for, and how regular veterinary care and early insurance keep a Siamese healthy through a long life in Brisbane.

10 min read · Updated September 29, 2026
Author: LocalPetFinder Team
A healthy adult Siamese cat with blue eyes, illustrating a guide to the breed's health conditions for Brisbane owners
The Siamese is long-lived and hardy, but it has a distinct health picture. This guide is general information, not veterinary advice; your vet is the right guide for your cat.

The short answer

The Siamese is generally long-lived, often reaching its mid-to-late teens or beyond, but the breed is associated with a few conditions: progressive retinal atrophy (PRA, an inherited eye disease that leads to blindness and has a DNA test), amyloidosis (a protein depositing in organs like the liver or kidneys), a tendency to respiratory disease and feline asthma, dental disease, and certain cancers such as lymphoma in young cats of this breed group. Cats adapt well to slow sight loss, and responsible breeders DNA-test for PRA. Adopting an adult rescue cat with a vet history lets you see its real health. Keep up regular vet and dental checks, insure early, and see a vet promptly for coughing or breathing trouble, eye changes, or persistent illness. This is general information, not veterinary advice.

Progressive retinal atrophy, and the DNA test

Progressive retinal atrophy (PRA) is an inherited degeneration of the retina that gradually leads to blindness and cannot be treated. It is one of the conditions most associated with the Siamese and related breeds. There are two reassuring points, though. First, cats cope with slow sight loss far better than people expect, especially indoor cats in a stable home, where they navigate confidently by memory, scent and whiskers, which is another reason the breed is best kept indoors. Second, a DNA test exists for the form of PRA seen in these breeds, which responsible breeders use to avoid producing affected kittens.

For an adopted cat of unknown background, the practical steps are to watch for signs, such as bumping into moved furniture, hesitation in dim light, or unusually dilated pupils, and to have any concern checked by a vet. A blind or vision-impaired cat can still live a full, happy life indoors with a consistent layout and a bit of extra care. Screening databases such as the Orthopedic Foundation for Animals catalogue inherited-disease tests, and your vet can advise.

Amyloidosis

Amyloidosis is a condition the Siamese and related Oriental breeds are associated with, in which an abnormal protein called amyloid is deposited in the organs, most often the liver or the kidneys, and can gradually impair how they work. It is not preventable, and the signs depend on the organ affected: broadly the non-specific signs of liver or kidney trouble, such as lethargy, poor appetite, weight loss and increased thirst, and with the liver occasionally more sudden problems. Because the signs are vague and shared with many other conditions, the practical safeguard is regular veterinary checks, including blood and urine tests as the cat ages, and seeing a vet for any persistent change. The RSPCA Knowledgebase and your vet are good references.

Respiratory disease and asthma

Siamese are among the breeds noted for a higher tendency to feline asthma and other respiratory conditions. Feline asthma is an inflammatory airway disease causing coughing, wheezing and, in a bad episode, genuine breathing difficulty, which is an emergency. Learn the signs: coughing, wheezing, rapid breathing at rest, or open-mouth breathing and struggling for air. Treat obvious breathing distress as a get-to-a-vet-now situation. Asthma is diagnosed and managed by a vet, often very effectively with medication, and you can help an affected cat by reducing airborne irritants at home, such as cigarette smoke, heavy dust, strong sprays and dusty litters. Brisbane after-hours emergencies are handled by hospitals such as Animal Emergency Service at Jindalee and Underwood.

Dental disease and cancers

One reassuring note: the historical crossed eyes and kinked tail sometimes associated with the breed are cosmetic quirks that have largely been bred out and do not affect a cat's health or quality of life.

A long life, and insuring for it

The Siamese is a long-lived breed, and that is the frame for its health care: you are looking after a cat that may share your home for fifteen to twenty years, so the habits that matter are the steady ones. Adopting an adult rescue cat with a vet history lets you see its real health rather than gamble. Because the bigger costs are unpredictable and can arrive across a long life, pet insurance taken out while the cat is young is the most valuable safeguard, since insurers exclude pre-existing conditions. Pair it with the preventive basics: a good diet, dental care, regular vet checks, senior blood and urine screening as the cat ages, and year-round cat-safe parasite prevention. For general veterinary guidance the Australian Veterinary Association is a reliable starting point, and your own vet is the right guide for an individual cat.

Thinking about a Siamese in Brisbane?

A rescue Siamese comes with a vet check and honest notes, so you adopt knowing the cat. Browse Siamese and colourpoint crosses available across Brisbane and Queensland rescues.

See Available Siamese →

Frequently Asked Questions

What health problems are Siamese prone to?

The main ones to know are progressive retinal atrophy (PRA), an inherited eye disease that leads to blindness and has a DNA test; amyloidosis, a condition the breed is associated with where a protein deposits in organs such as the liver or kidneys; respiratory disease including feline asthma; dental disease, which Siamese and related breeds are prone to; and certain cancers, with lymphoma noted in young cats of this breed group. Siamese are also generally long-lived, often reaching their mid-to-late teens or beyond. A rescue cat should have a full vet check, and this is general information, not veterinary advice.

What is PRA in Siamese, and is there a test?

Progressive retinal atrophy (PRA) is an inherited degeneration of the retina that gradually leads to blindness and cannot be treated. The good news is twofold: cats adapt remarkably well to slow sight loss, especially indoor cats in a stable home, navigating confidently by memory, smell and whiskers; and a DNA test exists for the form of PRA seen in Siamese and related breeds, which responsible breeders use to avoid producing affected kittens. For an adopted cat, watch for signs like bumping into moved furniture, hesitance in dim light, or unusually dilated pupils, and have any concern checked by a vet. A blind cat can still live a full, happy life indoors.

What is amyloidosis in Siamese?

Amyloidosis is a condition the Siamese and related Oriental breeds are associated with, in which an abnormal protein called amyloid is deposited in the organs, commonly the liver or the kidneys, and can gradually impair how they work, sometimes leading to organ failure. It is not something an owner can prevent, and the signs depend on the organ affected, for example the general signs of liver or kidney trouble such as lethargy, poor appetite, weight loss, increased thirst or, with the liver, sometimes sudden problems. Because the signs are non-specific, regular veterinary checks matter, and any persistent change warrants a vet visit. Your vet is the right guide for an individual cat.

Are Siamese prone to breathing or asthma problems?

Siamese are among the breeds noted for a higher tendency to feline asthma and other respiratory conditions. Feline asthma is an inflammatory airway disease that causes coughing, wheezing and, in a bad episode, real breathing difficulty, which is an emergency. If you notice a Siamese coughing, wheezing, breathing rapidly at rest or with an open mouth, or struggling to breathe, see a vet, and treat obvious breathing distress as urgent. Asthma is diagnosed and managed by a vet, often very effectively with medication, and reducing airborne irritants at home (smoke, heavy dust, strong sprays, some litters) can help an affected cat.

Do Siamese have dental problems?

Siamese and related breeds are prone to dental disease, including periodontal disease and, in some cats, painful inflammatory conditions of the mouth. Because dental disease is common, uncomfortable and often hidden, look after the teeth actively: brush them with a cat-specific toothpaste where the cat tolerates it, and have regular veterinary dental checks so problems are caught and treated early. Signs of dental trouble include bad breath, drooling, pawing at the mouth, difficulty eating or dropping food. Good dental care is one of the most valuable and most overlooked parts of keeping any cat, and it matters particularly for this breed group.

Is pet insurance worth it for a Siamese?

For most owners, yes, and it is easiest to arrange while the cat is young and healthy, because insurers exclude pre-existing conditions. A Siamese's potential issues, from managing asthma to investigating amyloidosis or treating dental disease, can add up over a long life, and a rescue cat's history is often unknown. Take out cover as soon as you adopt, read the waiting periods and exclusions, and pair it with the preventive basics: a good diet, dental care, regular vet checks and year-round cat-safe parasite prevention, which matters in Brisbane because South East Queensland has paralysis ticks all year. Because Siamese are long-lived, senior check-ups become especially worthwhile as the cat ages.

Keep reading