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How long can cat gastritis last?

Acute gastritis in cats typically lasts 1 to 3 days with proper care, while chronic gastritis may persist or recur and requires ongoing management.

Understanding the Duration and Management of Cat Gastritis

Gastritis in cats refers to inflammation of the stomach lining, which can cause significant discomfort and a variety of gastrointestinal symptoms. It is important for cat owners to recognize the different forms of gastritis, its causes, symptoms, diagnosis, and treatment options, especially regarding how long it can last.

Types of Gastritis

  • Acute gastritis: Sudden onset and short duration, usually resolving within 1–3 days with appropriate supportive care.
  • Chronic gastritis: Long-lasting or intermittent inflammation, often requiring extended management and medical oversight.

Common Symptoms of Cat Gastritis

  • Vomiting (with food, bile, or blood)
  • Lack of appetite
  • Abdominal pain
  • Lethargy
  • Dehydration
  • Weight loss
  • Black, tarry stool (melena)
  • Diarrhea
  • Excessive thirst or drooling
  • Behavioral changes like hiding
  • Fever in some cases

Causes of Gastritis in Cats

Gastritis can occur due to a variety of triggers:

  • Dietary indiscretion – eating spoiled food or non-food items
  • Drug or toxin ingestion – including NSAIDs, antibiotics, plants, or chemicals
  • Infections – parasitic, bacterial, or viral
  • Food allergies or sensitivities
  • Hairballs or foreign bodies
  • Underlying diseases – such as kidney or liver disease, IBD, or cancer
  • Stress and anxiety
  • Medication side effects
  • Idiopathic causes where a specific cause isn't identified

Diagnosis of Gastritis

Veterinarians use several diagnostic methods to determine the cause and form of gastritis:

  • Physical exam and medical history review
  • Blood tests (CBC, biochemistry, electrolytes)
  • Urinalysis and fecal tests
  • Diagnostic imaging – X-rays or ultrasound
  • Endoscopy and biopsies – especially in chronic cases
  • Allergy testing for suspected food sensitivities

Treatment and Management

The approach depends on the severity and underlying cause:

For acute cases:
  • Withhold food for 8–24 hours after vomiting ceases
  • Offer water in small amounts to avoid dehydration
  • Feed small, bland meals (e.g., boiled chicken and rice)
  • Gradually reintroduce regular diet
  • Probiotics to balance gut bacteria
  • Anti-nausea (antiemetic) drugs if needed
  • Stomach protectants or acid reducers in some cats
For chronic or severe cases:
  • Fluid therapy – intravenous or subcutaneous
  • Further diagnostics to assess underlying problems
  • Surgical intervention – if a foreign body is present
  • Anti-inflammatory or immunosuppressive drugs – for immune-related gastritis/IBD
  • Antibiotics – if bacterial cause is found
  • Hypoallergenic or limited-ingredient diet – in food-related gastritis

When to See a Veterinarian

Seek prompt veterinary attention if your cat:

  • Vomits repeatedly within 24 hours
  • Shows blood in vomit (red or coffee ground-like)
  • Becomes weak or refuses food and water
  • Is a kitten, senior cat, or has pre-existing conditions
  • Exhibits signs of abdominal discomfort or distress

Prevention and Long-Term Outlook

To reduce the risk and recurrence of gastritis, cat owners should:

  • Feed a consistent, high-quality commercial diet
  • Avoid table scraps and sudden dietary shifts
  • Store cleaning products and toxins safely out of reach
  • Manage hairball formation through grooming
  • Use parasite prevention as recommended
  • Minimize stress at home – through enrichment and routine
  • Schedule regular veterinary wellness exams

Prognosis: Most cats with acute gastritis respond well and recover within a few days. Chronic gastritis requires longer-term care and routine evaluations, especially if associated with other diseases like kidney or liver conditions, IBD, or cancer.

With proper diagnosis, timely treatment, and careful dietary and environmental management, most cats can enjoy improved comfort and quality of life despite a history of gastritis.

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