Rare diseases in dogs and cats: 10 conditions to know

Dogs and cats can also be affected by rare diseases. On Rare Disease Day, we want to do our bit to raise awareness of these uncommon conditions in dogs and cats.

Why are they called rare diseases? Because they affect a small number of people or animals compared with the population as a whole: their incidence and prevalence are low. That is exactly why it helps to have heard of them and to know which signs to look out for. At Maikai Pets we believe in information and everyday preventive care as the foundations of a full, healthy life for our pets. If you notice any symptom, your vet is always the reference.

10 rare diseases in dogs and cats

1. Manx syndrome in cats

A genetic condition that mainly affects Manx cats and causes problems in the spine and nervous system. Cats with this syndrome have a very short tail or no tail at all. Signs can include faecal or urinary incontinence, weakness in the hind legs and balance problems. Treatment focuses on relieving symptoms and preventing complications.

2. Cushing's syndrome in dogs

Excess cortisol production can cause signs such as increased thirst, increased appetite and hair loss. Although it is not rare in dogs (it is one of the most common hormonal disorders, mainly in middle-aged and older dogs), it often goes unnoticed because its signs are mistaken for normal ageing. Life expectancy after diagnosis varies a great deal from dog to dog; with an early diagnosis, treatment tailored by the vet and regular monitoring, many dogs keep a good quality of life.

3. Hypertrophic cardiomyopathy in cats

A heart condition in which the heart muscle thickens. It is the most common heart disease in cats. It is more frequent in adult and older cats, but young animals can also be affected. If it is detected in time, the vet can manage it with medication to slow its progression and control symptoms. It is particularly dangerous when it goes undetected, as visible signs are often scarce.

4. Hip dysplasia in dogs

Hip dysplasia develops while the dog is growing, so the first signs often appear in puppies and young dogs, although it can show at any age. A malformed hip joint can lead to pain and arthritis. Some breeds have a genetic predisposition, but habits such as keeping a healthy weight and adapting exercise during growth help reduce its impact. If you have a large-breed dog, you may find our guide on when to start caring for a large dog's joints useful.

5. Von Willebrand disease in dogs

An inherited bleeding disorder that affects blood clotting, similar to haemophilia in humans. Some of its signs are:

• Frequent nosebleeds
• Bleeding gums
• Prolonged bleeding after an injury or surgery
• Blood in the stools or urine
• Bruising

There is no cure, but it can be managed. It is very important that a vet monitors it, as affected dogs cannot take certain medicines that could make bleeding worse.

6. Horner's syndrome in dogs and cats

A neurological condition that can cause ptosis (drooping eyelid), miosis (constricted pupil) and enophthalmos (a sunken eyeball). There is no specific treatment for Horner's syndrome itself: after diagnosis, the vet looks for and treats the underlying cause when there is one, and in many cases with no identifiable cause the signs ease on their own over time. Consult your vet promptly if you notice any of these signs or unusual behaviour.

7. Cerebellar ataxia in cats and dogs

A neurological disease that affects coordination and balance, often noticed as a wobbly or uncoordinated gait. Treatment depends partly on the cause. When the animal is born with it, there is usually no treatment and it will learn to live with it; when ataxia is caused by an external factor, it may be treatable depending on its origin.

8. Immune-mediated haemolytic anaemia in dogs

Haemolytic anaemia is an uncommon condition that needs a lot of care. It can be fatal if it is not detected and treated in time, so early identification and diagnosis are essential. Signs you may notice in a dog with haemolytic anaemia include:

• Weakness, apathy and tiredness
• Reluctance to exercise or play
• Pale gums and tongue
• Jaundice: the eyes and skin may turn yellowish because of raised bilirubin levels
• A fast heart rate (tachycardia)

9. Muscular dystrophy in dogs

A genetic condition, similar to muscular dystrophy in humans, that causes progressive muscle degeneration. It mainly affects certain large breeds, such as the Golden Retriever, although it can also occur in other breeds. Signs usually appear early in life. There is no cure: once the vet has diagnosed it, management combines physiotherapy, medication where appropriate, weight control and regular monitoring.

10. Acromegaly in cats

A rare condition caused by excess growth hormone (GH), usually produced by a functional tumour in the pituitary gland. It mostly affects older cats, more often males, of any breed. Over time it can enlarge the head, jaw and paws. Diagnosis is difficult because it develops gradually and its signs vary, and the most significant sign is diabetes mellitus that responds poorly to insulin.

Conclusion

At Maikai Pets we are committed to the overall wellbeing of your pets. Knowing about these rare diseases in dogs and cats and watching for early signs are key steps in looking after their health. This information is for general guidance and does not replace a veterinary diagnosis: regular check-ups with your vet, together with a caring environment, remain essential throughout their lives.