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28 articles in Symptoms

Bulldog surrounded by illustrated circles showing common causes of itching.
SymptomsCanine Allergy Learning Center · Part 1 of 23

Is My Dog Itchy Because of Allergies?

Itching is a symptom, not a diagnosis. Learn how veterinarians work through every possible cause of an itchy dog — allergies, parasites, infections, and more.

Jul 28, 2026 · 12 min read

Border Collie scratching its ear outdoors.
SymptomsCanine Allergy Learning Center · Part 2 of 23

Why Is My Dog So Itchy? Understanding the Science Behind Allergic Skin Disease

What actually happens beneath the surface of your dog's skin — the allergic cascade, the skin barrier, and the itch-scratch cycle explained.

Jul 29, 2026 · 13 min read

Yellow Labrador Retriever licking one front paw.
SymptomsCanine Allergy Learning Center · Part 5 of 23

Why Does My Dog Keep Licking Their Feet?

Allergies, yeast, pain, foreign bodies, and anxiety all cause paw licking. Learn what the pattern of licking tells your veterinarian.

Aug 3, 2026 · 13 min read

Labrador Retriever with a localized red hot spot on the skin illustrating acute moist dermatitis in dogs.
SymptomsCanine Allergy Learning Center · Part 6 of 23

Why Did My Dog Suddenly Develop a Hot Spot?

Hot spots can appear seemingly overnight. Learn what causes acute moist dermatitis, why hot spots spread so quickly, and how veterinarians treat them.

Aug 9, 2026 · 9 min read

Apoquel for Dogs: Everything Pet Owners Should Know — a Border Collie resting beside a bottle of Apoquel with an illustration showing Apoquel blocking the itch signal to the brain.
SymptomsCanine Allergy Learning Center · Part 9 of 23

Apoquel® for Dogs: Everything Pet Owners Should Know

How Apoquel works, how fast it controls itching, side effects, safety and cancer questions, and how veterinarians decide when to use it.

Aug 20, 2026 · 10 min read

Chocolate Standard Poodle resting comfortably beside Cytopoint with an illustration showing a Cytopoint antibody binding the IL-31 itch messenger.
SymptomsCanine Allergy Learning Center · Part 10 of 23

Cytopoint® for Dogs: Everything Pet Owners Should Know

How Cytopoint works, how quickly it may relieve itching, how long it lasts, its safety profile, and when veterinarians recommend it.

Aug 20, 2026 · 9 min read

Beagle and chocolate Standard Poodle representing Apoquel and Cytopoint allergy treatment options for dogs
SymptomsCanine Allergy Learning Center · Part 11 of 23

Apoquel® vs. Cytopoint®: Which Allergy Treatment Is Right for My Dog?

Apoquel and Cytopoint both treat allergic itching in dogs, but they work differently. How veterinarians compare them, when each may be preferred, and when they may be used together.

Aug 20, 2026 · 9 min read

Boston Terrier with a veterinary illustration showing Benadryl blocking histamine while other allergic itch pathways remain active
SymptomsCanine Allergy Learning Center · Part 12 of 23

Why Benadryl® Usually Doesn't Work for Itchy Dogs

Antihistamines still have important uses in veterinary medicine, but most dogs with chronic environmental allergies need more. Why Benadryl disappoints, and when it does help.

Aug 20, 2026 · 8 min read

Dog with areas of red, irritated skin and hair loss illustrating recurrent bacterial and yeast skin infections in dogs.
SymptomsCanine Allergy Learning Center · Part 7 of 23

Why Does My Dog Keep Getting Skin Infections?

Understanding bacterial and yeast skin infections in dogs — why pyoderma and Malassezia keep coming back, and what skin cytology reveals.

Aug 20, 2026 · 9 min read

Beagle with prednisone bottle illustrating the balance between rapid steroid relief and the risks of repeated steroid use in dogs with allergies.
SymptomsCanine Allergy Learning Center · Part 8 of 23

Why Do Steroids Work So Well—And Why Don't Veterinarians Want to Depend on Them?

Understanding prednisone, dexamethasone, and steroid injections for dogs with allergies — why they work so fast, and why repeated use carries risk.

Aug 20, 2026 · 10 min read

Blue merle Australian Shepherd beside fish oil with a subtle illustration of skin-barrier support from omega-3 fatty acids
SymptomsCanine Allergy Learning Center · Part 13 of 23

Do Omega-3 Fatty Acids Really Help Dogs with Allergies?

Fish oil won't cure allergies or stop itching overnight, but it can support a healthier skin barrier over time. How EPA and DHA work, how long they take, and why dosing matters.

Aug 21, 2026 · 8 min read

Black-and-tan Cavalier King Charles Spaniel for an educational veterinary article about allergy testing in dogs
SymptomsCanine Allergy Learning Center · Part 14 of 23

Allergy Testing for Dogs: What It Can—and Can't—Tell You

Allergy testing doesn't diagnose allergies. It identifies environmental allergens so an individualized immunotherapy plan can be created for a dog already diagnosed with atopic dermatitis.

Aug 21, 2026 · 8 min read

Dalmatian resting comfortably beside an allergen-specific immunotherapy vial for an educational veterinary article about allergy immunotherapy for dogs
SymptomsCanine Allergy Learning Center · Part 15 of 23

Allergy Shots for Dogs: Can We Actually Change the Disease?

Allergen-specific immunotherapy is the one allergy treatment designed to change the immune response itself rather than control today's itch — how it works, who it helps, and why it takes months.

Aug 21, 2026 · 9 min read

Brindle-and-white French Bulldog beside an elimination diet bowl for an Ask Dr. Rene' educational article about diagnosing food allergies in dogs with an elimination diet trial.
SymptomsCanine Allergy Learning Center · Part 16 of 23

Elimination Diet Trials in Dogs: The Only Proven Way to Diagnose a Food Allergy

Food allergy can't be diagnosed from blood, saliva, or hair tests. Here's how a properly performed elimination diet trial works, why strict feeding matters, and why the food challenge confirms the diagnosis.

Aug 21, 2026 · 9 min read

Red-and-white Pembroke Welsh Corgi with a single flea for an Ask Dr. Rene' educational article about flea allergy dermatitis and flea prevention in dogs.
SymptomsCanine Allergy Learning Center · Part 17 of 23

Why Flea Prevention Is One of the Most Important Allergy Treatments Your Dog Will Ever Receive

Most owners of flea-allergic dogs never see a flea. Here's why one flea bite can cause weeks of itching, how flea allergy dermatitis is diagnosed, and why year-round prevention is allergy treatment.

Aug 21, 2026 · 8 min read

Black-and-tan Dachshund beside a small flea illustrating why a dog may still encounter fleas while receiving flea prevention.
SymptomsCanine Allergy Learning Center · Part 18 of 23

Why Does My Dog Still Have Fleas Even Though They're on Flea Prevention?

Found a flea even though your dog is on flea prevention? Here's how modern flea medications actually work, why occasional fleas may still appear, and when it may signal a real problem.

Aug 21, 2026 · 8 min read

Golden Retriever being gently bathed, illustrating bathing as part of allergy management for dogs.
SymptomsCanine Allergy Learning Center · Part 19 of 23

Bathing an Allergy Dog: One of the Most Overlooked Allergy Treatments

How often should you bathe a dog with allergies? Here's how bathing removes environmental allergens, why shampoo contact time matters, and how conditioners, wipes, and paw care fit in.

Aug 21, 2026 · 8 min read

Tabby cat scratching its neck, illustrating an Ask Dr. Rene' educational article about why cats itch and how feline allergies appear.
SymptomsFeline Allergy Learning Center · Part 1 of 10

Why Is My Cat Itchy? A Veterinarian's Guide to Feline Allergies

Cats don't always show allergies the way dogs do. Overgrooming, hair loss, scabs, and head or neck scratching can all be signs of allergic skin disease — but allergies aren't the only reason cats itch.

Aug 21, 2026 · 11 min read

Bernese Mountain Dog resting comfortably in a clean home beside a small air purifier for an article about environmental management for dogs with allergies.
SymptomsCanine Allergy Learning Center · Part 20 of 23

Environmental Management for Allergy Dogs: How to Reduce Allergens at Home

You can't remove every allergen, but you can lower your dog's allergen load. Washing bedding, vacuuming, HEPA filters, humidity control, paw wiping, and flea prevention all add up.

Aug 21, 2026 · 8 min read

Gray tabby cat grooming a bald patch on its side, illustrating an Ask Dr. Rene' educational article about feline overgrooming and hair loss.
SymptomsFeline Allergy Learning Center · Part 2 of 10

Why Is My Cat Licking All Their Fur Off?

Overgrooming, hair loss, and what your cat may be trying to tell you — how allergies, fleas, skin disease, pain, and stress can all lead a cat to lick their fur away.

Aug 21, 2026 · 12 min read

Gray tabby cat resting on a cream blanket for an article about flea allergy dermatitis in cats.
SymptomsFeline Allergy Learning Center · Part 3 of 10

Flea Allergy in Cats: Why One Flea Can Cause a Huge Problem

Why you may never see a flea on a cat with flea allergy — how flea allergy dermatitis causes itching, overgrooming, scabs, and hair loss, even in indoor-only cats.

Aug 21, 2026 · 13 min read

Gray tabby cat beside a food bowl for an article about food allergies in cats.
SymptomsFeline Allergy Learning Center · Part 4 of 10

Food Allergies in Cats: Is Chicken Really the Problem?

What feline food allergy actually looks like, why the ingredient list can't diagnose it, and how a veterinary elimination diet trial and dietary challenge give real answers.

Aug 23, 2026 · 14 min read

Gray tabby cat resting on a cream blanket for an article about environmental allergies in cats.
SymptomsFeline Allergy Learning Center · Part 5 of 10

Environmental Allergies in Cats: When the Problem Isn't the Food

Pollen, dust mites, and mold can affect indoor cats too. How feline environmental allergy looks, how veterinarians diagnose it, and why allergy testing isn't the first step.

Aug 24, 2026 · 15 min read

Long-haired tabby cat resting on soft cream bedding for an article about treating allergies in cats.
SymptomsFeline Allergy Learning Center · Part 6 of 10

Treating Allergies in Cats: Building a Plan That Actually Works

Medications, topical care, immunotherapy—and why the best feline allergy plan is usually several coordinated pieces rather than one miracle medication.

Aug 24, 2026 · 16 min read

Orange tabby cat scratching near its ear beside the title Why Does My Cat Keep Getting Ear Infections?
SymptomsFeline Allergy Learning Center · Part 7 of 10

Why Does My Cat Keep Getting Ear Infections?

Recurring ear problems in cats can come from mites, yeast, bacteria, allergies, polyps, or structural disease — why the cause determines the treatment.

Aug 24, 2026 · 14 min read

Tabby-and-white cat scratching beside the title Why Does My Cat's Allergy Treatment Keep Stopping Working?
SymptomsFeline Allergy Learning Center · Part 8 of 10

Why Does My Cat's Allergy Treatment Keep Stopping Working?

Allergy flares happen even when treatment is still helping. Learn what pushes a cat over their itch threshold and why the answer isn't always stronger medication.

Aug 24, 2026 · 13 min read

Calico cat resting at home beside the title Helping Your Allergic Cat at Home.
SymptomsFeline Allergy Learning Center · Part 9 of 10

Helping Your Allergic Cat at Home

What actually helps an allergic cat between veterinary visits—and which popular “allergy remedies” deserve caution before you spend money on them.

Aug 24, 2026 · 14 min read

Black cat resting comfortably beside the title My Cat Has Allergies—What Happens Next?
SymptomsFeline Allergy Learning Center · Part 10 of 10

My Cat Has Allergies—What Happens Next?

What successful long-term allergy management looks like in cats, how to tell whether the plan is working, and when it is time to reassess.

Aug 24, 2026 · 14 min read

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