Medically reviewed by Bryan Hayter, DVM, Owner and Medical Director of Aliso Beach Animal Clinic. Last reviewed: August 2026.
An occasional upset stomach happens to many dogs. But when diarrhea, vomiting, soft stools, gas, appetite changes or abdominal discomfort keep returning, it may be time to stop treating each episode as an isolated “sensitive stomach” and ask a more useful question:
Why does this keep happening?
At Aliso Beach Animal Clinic in Laguna Beach, our approach to recurring digestive problems is both diagnostic and integrative. We look at the complete patient—including diet, medications, supplements, lifestyle, previous illnesses, environmental exposures and diagnostic findings—while using conventional veterinary medicine to identify problems that should not be missed.
That philosophy is central to our approach to holistic and integrative veterinary care in Laguna Beach. Holistic care does not mean avoiding bloodwork, imaging, prescription diets or medication. It means considering the whole animal and choosing the combination of treatments most appropriate for that individual patient.
When Does an Upset Stomach Become a Chronic Digestive Problem?
A single episode of loose stool after eating something unusual is very different from gastrointestinal symptoms that continue or repeatedly return.
Veterinary medicine commonly uses the term chronic enteropathy for persistent or recurrent gastrointestinal signs such as diarrhea, vomiting and appetite changes lasting approximately three weeks or longer.
Importantly, symptoms can be intermittent. A dog may have diarrhea for several days, improve, appear normal for a week and then develop another episode. That pattern can still represent chronic gastrointestinal disease.
Signs that deserve discussion with your veterinarian include:
- Recurring soft stool or diarrhea
- Repeated episodes of vomiting
- Mucus or recurrent fresh blood in the stool
- Excessive gas or abdominal noises
- Frequent urgency to defecate
- Changes in stool frequency or volume
- Intermittent loss of appetite
- Unexplained weight loss
- Difficulty maintaining weight or muscle
- Recurring abdominal discomfort
- Changes in energy or behavior associated with digestive episodes
The Merck Veterinary Manual’s current review of chronic enteropathies describes chronic gastrointestinal signs as potentially including vomiting, diarrhea, appetite changes and weight loss and emphasizes that multiple different disease processes can produce similar symptoms.
Chronic Diarrhea Is a Symptom, Not a Diagnosis
One of the biggest mistakes in managing recurring gastrointestinal problems is assuming that every dog with chronic diarrhea has the same disease.
“Diarrhea,” “vomiting,” “gas” and “sensitive stomach” describe what a pet is experiencing. They do not tell us why it is happening.
Possible causes can include:
- Diet-responsive gastrointestinal disease
- Adverse food reactions or food intolerance
- Intestinal parasites
- Giardia infection
- Chronic inflammatory enteropathy
- Pancreatic disease
- Exocrine pancreatic insufficiency
- Liver or gallbladder disease
- Kidney disease
- Endocrine disorders
- Alterations in intestinal bacteria and the gastrointestinal microbiome
- Medication or supplement effects
- Foreign material or partial gastrointestinal obstruction
- Intestinal masses or other infiltrative diseases
- Gastrointestinal cancer
This is why repeatedly changing foods, adding supplements or treating every episode at home can sometimes delay recognition of the underlying condition.
Why We Don’t Automatically Call Chronic Digestive Disease “IBD”
Pet owners frequently hear the term inflammatory bowel disease (IBD) used for almost every recurring gastrointestinal problem.
Modern veterinary terminology is more precise.
The broader term chronic enteropathy may be more appropriate for many dogs with persistent gastrointestinal signs because the cause and type of disease often cannot be determined from symptoms alone. Some dogs improve substantially with dietary therapy and never require immunosuppressive medication.
The 2026 ACVIM-endorsed consensus statement on chronic inflammatory enteropathy in dogs provides updated, evidence-based guidance regarding diagnosis, dietary trials, endoscopy, biopsy and treatment of chronic intestinal disease.
The distinction matters. Two dogs can have nearly identical diarrhea and vomiting while requiring very different treatment plans.
What Does a Veterinary Workup for Chronic Digestive Problems Look Like?
There is no single test called a “chronic diarrhea panel” that answers every question. Diagnostic recommendations should be based on your dog’s age, breed, physical examination, symptom severity, duration of illness, weight changes, previous treatment and dietary history.
At Aliso Beach Animal Clinic, the evaluation begins with history and physical examination and may progress to testing when appropriate.
1. A Detailed Diet and Medical History
A useful gastrointestinal history goes far beyond the name printed on the dog-food bag.
Your veterinarian may ask about:
- Every food your dog eats
- Treats and table food
- Dental chews and edible toys
- Flavored medications
- Meal toppers
- Probiotics and digestive products
- Vitamins, herbs, oils and other supplements
- Recent diet changes
- Garbage or scavenging behavior
- Beach, park, boarding or travel exposure
- Previous medications
- Parasite prevention
- Previous gastrointestinal episodes
- Weight and appetite changes
A surprisingly small source of food can matter during a diagnostic diet trial. Treats, chews or flavored medications may contain proteins that interfere with a carefully planned elimination diet.
2. Physical Examination
The veterinarian may evaluate hydration, body condition, muscle condition, abdominal comfort, oral health, lymph nodes, temperature and other findings that help determine how aggressively the problem should be investigated.
3. Laboratory and Fecal Testing
Depending on the case, testing may include a complete blood count, blood chemistry profile, urinalysis, fecal testing or more specific gastrointestinal or pancreatic tests.
Laboratory testing may identify—or help rule out—problems outside the intestinal tract that can mimic primary gastrointestinal disease.
Our veterinary diagnostics and bloodwork services allow the medical team to select testing based on the individual patient’s symptoms rather than using the same panel for every dog.
4. Parasite Testing Matters Even in Well-Cared-For Dogs
Intestinal parasites should remain part of the differential diagnosis for chronic or intermittent diarrhea. Exposure can occur through contaminated soil, feces, water and shared environments.
Giardia is particularly important because infected dogs may experience acute, intermittent or chronic diarrhea and some dogs can carry the organism without obvious symptoms.
The Companion Animal Parasite Council’s Giardia guidelines provide current recommendations for diagnosis, treatment and prevention.
5. Diagnostic Imaging
When symptoms persist, imaging may provide information that cannot be obtained from a physical examination or routine bloodwork alone.
Depending on the medical question, your veterinarian may recommend digital radiographs or an abdominal ultrasound.
Abdominal ultrasound at Aliso Beach Animal Clinic can evaluate structures including the stomach, intestines, pancreas, liver, gallbladder, kidneys, spleen and abdominal lymph nodes. Specialist abdominal ultrasound examinations are available at our Laguna Beach clinic when indicated.
Ultrasound can be particularly useful when a dog has persistent vomiting or diarrhea, unexplained weight loss, abdominal discomfort, abnormal laboratory findings or another problem that has not yet been clearly diagnosed.
Diet Is Often Treatment—not Just Something Your Dog Eats
Nutrition is one of the most important areas of modern chronic gastrointestinal management.
The 2026 ACVIM-endorsed guidance places substantial importance on dietary management for stable dogs with chronic inflammatory enteropathy. This is one reason an appropriate diet trial should be treated as a medical intervention rather than casual food experimentation.
Depending on the suspected problem, a veterinarian may consider diets with characteristics such as:
- Hydrolyzed protein
- A novel protein source
- High digestibility
- Modified fat content
- Modified fiber content
- Specific therapeutic formulations
Our pet nutrition counseling service in Laguna Beach focuses on the individual patient rather than marketing terms such as “premium,” “natural,” “human grade” or “holistic.”
The World Small Animal Veterinary Association Global Nutrition Guidelines similarly emphasize individualized nutritional assessment and evidence-informed food selection.
Why Constantly Switching Dog Foods Can Make the Problem Harder to Solve
When a dog has recurring diarrhea, owners understandably begin searching for a food that “works.” Unfortunately, rapidly rotating among chicken, beef, salmon, lamb, grain-free foods, fresh diets and gastrointestinal formulas can make the eventual diagnostic process more complicated.
A properly designed diet trial should be deliberate.
If the goal is to determine whether a dog has a diet-responsive condition, your veterinarian may recommend feeding a particular diet exclusively for a defined period. Even seemingly harmless extras can interfere with that process.
Before beginning a trial, tell your veterinarian about everything your dog consumes—including supplements, treats, flavored preventives and medications.
What About Probiotics and the Gut Microbiome?
The intestinal microbiome is an important area of veterinary research, and changes in intestinal microbial populations have been associated with gastrointestinal disease.
That does not mean every dog with diarrhea needs the same probiotic.
Probiotic products differ by organism, strain, concentration, manufacturing quality and supporting evidence. A product that may be reasonable for one clinical situation should not automatically be assumed to treat another.
The same caution applies to digestive enzymes, fiber products, herbal preparations, vitamins and other gastrointestinal supplements.
At Aliso Beach Animal Clinic, our veterinary supplement and nutraceutical consultations are designed to help owners evaluate what a product contains, why it is being considered, whether evidence supports its intended use and whether it could interact with the pet’s diet, medications or medical conditions.
Could Vitamin B12 Be Involved?
Vitamin B12, or cobalamin, is absorbed through the gastrointestinal tract and may become low in some dogs with chronic intestinal or pancreatic disease.
A low cobalamin concentration can be clinically important and may be one reason a veterinarian recommends additional gastrointestinal laboratory testing in a dog with persistent symptoms or weight loss.
Whether supplementation is needed, and how it should be provided, depends on the individual patient’s diagnostic results.
What Role Does Acupuncture Have in Digestive Disease?
Veterinary acupuncture can be part of an integrative treatment plan for selected patients, but an important distinction needs to be made:
Acupuncture is not a substitute for diagnosing chronic vomiting, diarrhea, weight loss or abdominal pain.
Current evidence-based management of chronic enteropathy emphasizes accurate clinical assessment, diet and condition-specific medical treatment. Acupuncture should not delay bloodwork, parasite testing, imaging, dietary therapy, endoscopy or other diagnostics when they are indicated.
At Aliso Beach Animal Clinic, veterinary acupuncture is provided by Bryan Hayter, DVM, who completed veterinary acupuncture training through the International Veterinary Acupuncture Society.
When acupuncture is considered, Dr. Hayter incorporates it into a broader veterinary treatment plan rather than using it as an alternative to necessary conventional medical care.
What “Holistic” Digestive Care Means at Aliso Beach Animal Clinic
The word holistic can mean very different things online.
At Aliso Beach Animal Clinic, holistic and integrative medicine does not mean assuming that natural products are safer than medications or rejecting conventional veterinary treatment.
Instead, we consider factors such as:
- The underlying diagnosis
- Nutrition
- Medication when appropriate
- Supplements when there is a reasonable indication
- Pain and comfort
- Body condition and weight
- Activity and lifestyle
- Environmental exposures
- Stress and behavior
- Long-term quality of life
Learn more about our philosophy of holistic and integrative veterinary care in Laguna Beach.
Stress and Routine Can Affect the Gastrointestinal Tract
Changes in routine, boarding, travel, household stress, altered feeding schedules and other environmental factors can contribute to gastrointestinal signs in some dogs.
But chronic diarrhea should not automatically be blamed on anxiety.
When a dog has persistent symptoms—especially weight loss, poor appetite, blood in the stool, vomiting, abdominal pain or reduced energy—medical causes should be investigated.
For some patients, the eventual treatment plan may appropriately address both gastrointestinal disease and contributing environmental or behavioral factors.
When Chronic Digestive Problems Suddenly Become Urgent
A dog with a long history of digestive sensitivity can still develop an unrelated—or more serious—acute problem.
Contact a veterinarian promptly if your dog develops:
- Repeated vomiting
- Inability to keep water down
- Frequent or profuse diarrhea
- Significant blood in the stool or vomit
- Black or tar-like stool
- Marked lethargy or weakness
- Significant abdominal pain
- Sudden abdominal swelling
- Repeated attempts to vomit without producing anything
- Signs of dehydration
- Possible toxin exposure
- Possible foreign-object ingestion
Aliso Beach Animal Clinic provides same-day urgent veterinary care in Laguna Beach during regular clinic hours. Call (949) 499-4190 before arriving so our team can assess the situation, confirm availability and help determine the safest destination for your pet.
If you’re unsure whether your dog’s symptoms require our clinic or a 24-hour emergency hospital, use our Laguna Beach Pet Emergency & Urgent-Care Guide.
If the problem is new and acute rather than chronic, our Dog Diarrhea & Vomiting in Laguna Beach: When to See a Veterinarian guide explains which symptoms may be monitored and which warrant prompt veterinary attention.
When Should a Dog With Chronic Diarrhea See a Specialist?
Many gastrointestinal problems can initially be investigated and managed through primary veterinary care. Some patients, however, benefit from consultation with a board-certified veterinary internal medicine specialist or another specialist when symptoms are severe, unusual or resistant to treatment.
Referral may be considered when a dog has persistent or progressive disease, significant weight loss, low blood protein, unusual imaging findings, suspected cancer, needs endoscopy or intestinal biopsy, or does not respond as expected to an appropriately conducted diagnostic and treatment plan.
Good veterinary care includes recognizing when additional specialty expertise may benefit the patient.
Frequently Asked Questions About Chronic Digestive Problems in Dogs
Why does my dog keep getting diarrhea but otherwise seems fine?
Intermittent diarrhea can occur with diet-responsive disease, food intolerance, parasites, Giardia, colitis, chronic enteropathy and other conditions. Dogs can appear completely normal between episodes. Recurring diarrhea still deserves veterinary evaluation when it continues over time.
Can a dog suddenly become sensitive to a food it has eaten for years?
Yes. Previous tolerance of a food does not completely rule out a diet-related gastrointestinal problem. However, many conditions can resemble food sensitivity, so recurrent symptoms should not automatically be attributed to a particular ingredient without evaluation.
Should I keep changing dog food until I find one that works?
Usually not. Repeated uncontrolled food changes can make the history difficult to interpret. When dietary disease is suspected, a veterinarian can help select and structure a meaningful therapeutic diet trial.
Does my dog need an ultrasound for chronic diarrhea?
Not every dog does. Ultrasound may be useful when symptoms persist, weight loss occurs, laboratory results are abnormal, abdominal structures need closer evaluation or the diagnosis remains uncertain after initial testing.
Does every dog with chronic diarrhea need an intestinal biopsy?
No. Current veterinary guidance supports a stepwise approach in many stable dogs. Diet and other appropriate diagnostic or therapeutic trials may occur before invasive testing. Endoscopy and biopsy become more important in selected patients, particularly when disease is severe or does not respond as expected.
Can probiotics cure chronic diarrhea?
There is no single probiotic that reliably treats every cause of chronic diarrhea. Probiotics may have a role in selected situations, but the underlying diagnosis, product, bacterial strains and individual patient all matter.
Is chronic diarrhea always IBD?
No. Chronic diarrhea can have many causes, and even dogs with chronic enteropathy do not necessarily have histologically confirmed inflammatory bowel disease. Modern veterinary medicine increasingly uses more precise terminology based on diagnostic findings and treatment response.
Can holistic veterinary medicine help a dog with digestive problems?
An integrative approach can be useful when it means evaluating the complete patient and thoughtfully combining nutrition, conventional treatment and selected supportive therapies. Holistic care should not replace diagnostics or medically necessary treatment.
A More Individualized Approach to Chronic Digestive Disease
There is rarely one universal solution for a dog with recurring gastrointestinal problems.
One patient may respond to a carefully selected diet. Another may have Giardia. Another may need pancreatic testing. Another may require abdominal ultrasound or additional specialty diagnostics. Some dogs benefit from medication, nutritional supplementation or other supportive care in addition to dietary management.
The goal is not to choose between “conventional” and “natural” medicine.
The goal is to determine what is actually happening and choose the safest, most effective plan for that individual pet.
Veterinary Care for Chronic Digestive Problems in Laguna Beach
If your dog has recurring diarrhea, vomiting, soft stools, excessive gas, appetite changes, unexplained weight loss or another persistent gastrointestinal concern, Aliso Beach Animal Clinic can help you determine an appropriate next step.
Our Laguna Beach veterinary team combines physical examination, diagnostic testing, individualized nutrition guidance, conventional treatment and integrative veterinary options when appropriate.
We serve pets and families throughout Laguna Beach, South Laguna, Aliso Beach, Three Arch Bay, Monarch Beach, Dana Point, Laguna Niguel, Aliso Viejo and surrounding South Orange County communities.
Aliso Beach Animal Clinic
30816 Coast Highway
Laguna Beach, CA 92651
Directly across from the Montage Laguna Beach
Call (949) 499-4190 to schedule an evaluation.
Medical Review & Veterinary Sources
Medical review: Bryan Hayter, DVM, Owner and Medical Director, Aliso Beach Animal Clinic. Dr. Hayter earned his Doctor of Veterinary Medicine degree from Auburn University and completed veterinary acupuncture training through the International Veterinary Acupuncture Society.
This article was developed using current veterinary guidance and peer-reviewed clinical resources, including:
- American College of Veterinary Internal Medicine / Journal of Veterinary Internal Medicine: 2026 ACVIM-Endorsed Statement and Systematic Review on the Diagnosis and Treatment of Chronic Inflammatory Enteropathy in Dogs
- Merck Veterinary Manual: Chronic Enteropathies in Small Animals
- World Small Animal Veterinary Association: Global Nutrition Guidelines
- Companion Animal Parasite Council: Giardia Guidelines
This article is intended for general educational purposes and is not a substitute for examination, diagnosis or treatment by a veterinarian who has evaluated your pet. If your pet is seriously ill, collapsing, experiencing severe abdominal distension, unable to keep water down, having difficulty breathing or experiencing another life-threatening emergency, seek immediate veterinary care.