Flat-chested kitten syndrome in cats – signs and care
Book a vet visitBook a vet appointment if you think your cat has this – a vet needs to confirm it and plan the treatment. It is a rare condition in cats where the chest bone and rib cartilage do not form correctly.
What you can do now
- Contact your vet
- Note when it started, how often it happens and what else you see
- Take a photo or short video to show the vet
- Keep fresh water available
- Let your kitten rest somewhere calm
Don't
- Do not give any human medicine
- Do not wait if it gets worse
What it is
Flat-chested kitten syndrome is a rare condition in cats in which the chest bone and rib cartilage do not form correctly.[1] It matters because affected kittens may have breathing difficulty, fail to thrive or show blue-tinted skin or gums.[1]
Signs
Causes and risk factors
How a vet finds out
- A vet may feel chest deformity during an examination
- X-rays
- A CT scan to understand how severely the kitten is affected
How vets treat it
- For kittens showing no signs, treatment may not be required
- For affected kittens, surgery is often needed to correct the deformity
- Surgery is usually carried out at a specialist referral centre
Breeds prone to this
Veterinary charities list these breeds as more likely than others to get this condition. Each breed page lists the inherited conditions documented in the breed.
Bengal catWhat the experts say
“Flat-chested kitten syndrome is a rare condition in cats where the chest bone and rib cartilage don’t form correctly. It’s a condition seen in many cat breeds but is more commonly encountered in Burmese, Bengals, Oriental Longhairs and Oriental Shorthairs.”
Not sure how serious it is?
OkPaw asks a few quick questions about your pet and tells you in 30 seconds whether it can wait. Free on Google Play for Android.
OkPaw is on Android now – an iPhone version is on its way.
Common questions
What is flat-chested kitten syndrome?
It is a rare condition in cats where the chest bone and rib cartilage do not form correctly.[1]
What signs can it cause?
Signs can include weight loss or failure to gain weight, failure to suckle, increased breathing rate and effort, difficulty breathing, failure to thrive, coughing, and blue-tinted skin or gums.[1]
How might a vet diagnose and treat it?
A vet may feel chest deformity during an examination and may use X-rays or a CT scan; affected kittens may need surgery, usually at a specialist referral centre.[1]
Sources
How this page was made: written with the help of AI from the sources below, then checked claim by claim against those sources. Urgency levels follow OkPaw’s fixed safety rules. It is guidance, not a diagnosis. How we write our pages
Flea allergic dermatitis
Heart disease