A single episode of vomiting can have a minor cause, but repeated vomiting or vomiting with other symptoms deserves prompt attention. Cats may vomit because of stomach irritation, an intestinal problem or disease elsewhere in the body. Treating every episode as a hairball can delay needed care.
When vomiting is an emergency
Seek immediate veterinary care if your cat is weak, collapsing, struggling to breathe, in obvious pain, unable to urinate, or may have swallowed string, a toxin or another foreign object. Blood in vomit, repeated vomiting, a swollen abdomen, significant diarrhea, not eating, or dehydration also warrant prompt veterinary advice. Kittens and medically fragile cats should be assessed sooner because they can deteriorate quickly.
VCA Animal Hospitals’ veterinary guide notes that vomiting accompanied by lethargy, loss of appetite, abdominal pain, fever, diarrhea, dehydration or blood requires immediate veterinary care.
Vomiting or regurgitation?
Vomiting usually involves nausea or abdominal heaving and may produce food, foam or bile. Regurgitation is often more passive, with food or fluid coming back up soon after swallowing. This difference can help the veterinarian identify whether the problem involves the esophagus or stomach. A short description of what happened is often more useful than trying to diagnose from the material alone.
Common causes
Diet changes, spoiled food, hairballs, intestinal parasites and stomach inflammation may cause vomiting. More serious possibilities include pancreatitis, kidney disease, intestinal obstruction, toxins and urinary blockage. Persistent vomiting is not normal simply because a cat has a history of hairballs. A veterinarian must consider the whole picture, including drinking, urination, weight, appetite and behavior.
Safe steps while seeking veterinary advice
Record the number and timing of episodes, appetite, water intake, litter-box behavior and possible exposure to string, plants or medications. Keep the suspected product packaging for the clinic. Do not try to induce vomiting, pull string from a cat’s mouth or bottom, give human anti-nausea medication, or force food and water into a sick cat. Ask your veterinarian whether small meals or a special diet are appropriate once vomiting has settled.
Examination and treatment
The veterinarian may evaluate hydration and abdominal pain, examine the mouth, and recommend fecal testing, blood and urine tests, radiographs or ultrasound. Treatment might include fluids, an appropriate anti-nausea medicine, a veterinary diet or surgery for an obstruction. No single medication treats every cause safely. An emergency-care overview from VCA explains why repeated vomiting and suspected poisoning require timely evaluation.
Online advice versus examination
An online consultation may help with triage for a brief mild episode, but cannot feel an abdomen, check dehydration or identify a blockage. Persistent vomiting or illness calls for an in-person veterinarian. If your cat is also unusually tired or refusing food, mention that immediately.
General education only; do not substitute this for a veterinarian’s examination.
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.