If your dog has flaky skin, greasy fur, a musty odor, or seems to constantly scratch, seborrhea may be the cause. Seborrhea is one of the most common skin disorders seen in dogs and can range from mild dandruff to severe skin inflammation with secondary infections.
Although seborrhea isn’t always curable, it is often highly manageable once the underlying cause is identified. With the right combination of veterinary care, medicated shampoos, proper nutrition, and skin-supportive supplements, many dogs experience significant improvement and enjoy a much healthier coat.
One of the reasons I started this website is because I know what it’s like to leave the veterinary clinic with more questions than answers. Even with animal science degrees and a career in veterinary medicine, I’ve found myself going home after appointments and spending hours reading veterinary journals, talking with specialists, and trying to learn everything I could to help my own pets.
Over the years, I’ve cared for dogs with complex medical conditions, and I understand how overwhelming it can feel when you’re trying to make the best decisions for a pet you love. That’s why I write these guides—to combine my education, experience, and personal research into one place that’s easy for pet owners to understand.
This article isn’t a substitute for your veterinarian’s advice, but my goal is to help you better understand the condition, know what questions to ask, and learn about the treatments, diets, supplements, and products that may help improve your dog’s quality of life.
In this guide, you’ll learn everything you need to know about seborrhea in dogs, including symptoms, causes, diagnosis, treatment, supplements that may support skin health, and practical ways to help keep your dog’s skin healthy.
What Is Seborrhea in Dogs?
Seborrhea is a skin disorder that causes abnormal production of skin cells and natural skin oils (sebum).
Normally, skin cells are continuously replaced as old cells shed away. In dogs with seborrhea, this process becomes abnormal, leading to excessive flakes, oily skin, or both.
Seborrhea itself is not contagious, but it often causes irritation that can lead to secondary bacterial or yeast infections if left untreated.
Types of Seborrhea
Veterinarians generally recognize two main forms.
Seborrhea Sicca (Dry Seborrhea)
This form causes:
- Dry skin
- White flakes (dandruff)
- Brittle hair
- Mild itching
- Dull coat
Seborrhea Oleosa (Oily Seborrhea)
This form causes:
- Greasy coat
- Oily skin
- Strong odor
- Matted fur
- Sticky skin
- Yellow or brown scales
Many dogs actually develop a combination of both dry and oily seborrhea.
Primary vs. Secondary Seborrhea
Understanding the difference helps explain why some dogs improve quickly while others require lifelong management.
Primary Seborrhea
Primary seborrhea is an inherited disorder.
It is uncommon but occurs more frequently in certain breeds.
Because it is genetic, it cannot be cured but can often be managed successfully.
Secondary Seborrhea
Secondary seborrhea is much more common.
It develops because another medical condition affects the skin.
Treating the underlying disease often leads to significant improvement.
Symptoms of Seborrhea in Dogs
Symptoms vary depending on whether the skin is primarily dry or oily.
Common signs include:
- Dandruff
- White flakes
- Greasy fur
- Oily skin
- Bad skin odor
- Itching
- Hair loss
- Thickened skin
- Red skin
- Crusting
- Scaling
- Ear infections
- Excessive licking
- Matted coat
- Secondary bacterial infections
- Yeast infections
Some dogs develop symptoms over their entire body, while others are affected only in certain areas.
What Causes Seborrhea?
Many different conditions can lead to seborrhea.
Common causes include:
Allergies
Environmental allergies and food allergies frequently contribute to chronic skin inflammation and seborrhea.
Parasites
Parasites such as:
- Fleas
- Demodex mites
- Sarcoptic mange mites
- Lice
may all trigger skin irritation and scaling.
Hormonal Disorders
Several endocrine diseases may affect skin health, including:
- Hypothyroidism
- Cushing’s disease
- Sex hormone imbalances
Skin Infections
Bacterial and yeast infections commonly worsen seborrhea.
These infections often develop because abnormal skin allows microorganisms to multiply more easily.
Poor Nutrition
A diet lacking essential nutrients may contribute to poor skin and coat quality.
Obesity
Obesity may worsen skin disease by increasing skin folds, reducing grooming ability, and promoting chronic inflammation.
Genetics
Some breeds inherit primary seborrhea.
Breeds more commonly affected include:
- American Cocker Spaniels
- English Springer Spaniels
- West Highland White Terriers
- Basset Hounds
- Labrador Retrievers
- German Shepherds
Which Dogs Are Most at Risk?
Seborrhea is more common in:
- Dogs with allergies
- Dogs with endocrine disorders
- Dogs with chronic skin infections
- Dogs with inherited skin diseases
- Older dogs
- Certain predisposed breeds
How Is Seborrhea Diagnosed?
Your veterinarian will begin by looking for the underlying cause.
Testing may include:
- Physical examination
- Skin cytology
- Skin scraping
- Fungal testing
- Flea examination
- Blood work
- Thyroid testing
- Allergy evaluation
- Skin biopsy in selected cases
Finding the underlying cause is often the most important part of treatment.
Treatment for Seborrhea
Treatment depends on why the seborrhea developed.
Your veterinarian may recommend:
- Medicated shampoos
- Topical sprays
- Antibiotics
- Antifungal medications
- Allergy treatment
- Parasite treatment
- Hormonal therapy
- Dietary changes
Dogs with primary seborrhea often require lifelong management.
Medicated Shampoos
Bathing is one of the most effective ways to manage seborrhea.
Depending on your dog’s condition, your veterinarian may recommend shampoos containing ingredients such as:
- Chlorhexidine
- Miconazole
- Benzoyl peroxide
- Sulfur
- Salicylic acid
- Oatmeal
- Ceramides
These ingredients may help:
- Remove excess oil
- Loosen scales
- Reduce bacteria
- Control yeast
- Moisturize the skin
- Improve skin barrier function
Always follow your veterinarian’s recommended bathing schedule, as overbathing can worsen dryness in some dogs.
Essentials: Veterinary medicated shampoos, moisturizing conditioners, grooming brushes, microfiber drying towels, and pet dryers.
The Best Diet for Dogs With Seborrhea
Good nutrition is essential for healthy skin.
Many veterinarians recommend diets containing:
Dogs with food allergies may require:
Supplements That May Support Dogs With Seborrhea
Supplements cannot cure seborrhea, but they may help support healthier skin and coat when used alongside veterinary treatment.
Omega-3 Fish Oil
Omega-3 fatty acids are among the most commonly recommended supplements for chronic skin disease.
Potential benefits include:
- Supporting a healthy inflammatory response
- Improving skin barrier function
- Reducing dry skin
- Promoting healthier coat growth
- Supporting heart, joint, and brain health
Because skin cells take time to regenerate, noticeable improvements often occur gradually over several weeks.
Great Choice: High-quality fish oil supplements specifically formulated for dogs.
Skin and Coat Supplements
Many skin supplements contain ingredients such as:
- Omega-3 fatty acids
- Omega-6 fatty acids
- Biotin
- Vitamin E
- Zinc
These nutrients help support:
- Healthy skin cell turnover
- Coat quality
- Skin hydration
- Overall skin barrier health
They work best as part of a complete treatment plan rather than as a stand-alone solution.
Top Picks: Skin and coat soft chews, oils, and powders.
Probiotics
The health of the digestive system and immune system are closely connected.
Probiotics may help:
- Support beneficial gut bacteria
- Promote digestive health
- Support immune function
- Complement treatment in dogs with allergy-related skin disease
While probiotics don’t directly treat seborrhea, they may benefit dogs with chronic skin inflammation.
Top Pick: Veterinary-formulated canine probiotics.
Zinc Supplements
Some dogs with certain inherited skin disorders or zinc-responsive dermatoses may benefit from zinc supplementation.
However, zinc should only be given under veterinary supervision because excessive zinc can cause toxicity and interfere with the absorption of other essential minerals.
Great Choice: Veterinary-approved zinc supplements
Grooming Tips for Dogs With Seborrhea
Regular grooming helps remove excess skin flakes and distribute natural oils.
Helpful tips include:
- Brush your dog several times each week.
- Bathe according to your veterinarian’s recommendations.
- Dry the coat thoroughly after bathing.
- Clean the ears regularly if advised.
- Keep the coat free of mats.
- Watch for new areas of redness or odor.
Routine grooming also allows you to detect infections early.
Can Seborrhea Be Prevented?
Primary seborrhea cannot be prevented because it is inherited.
However, secondary seborrhea may be reduced by:
- Managing allergies
- Keeping dogs on flea prevention
- Feeding a balanced diet
- Treating skin infections promptly
- Maintaining a healthy body weight
- Scheduling regular veterinary checkups
Products That Can Help Manage Seborrhea
Many owners find these products useful:
- Medicated shampoos
- Moisturizing conditioners
- Fish oil supplements
- Skin and coat supplements
- Veterinary probiotics
- Grooming brushes
- Undercoat rakes
- Pet dryers
- Microfiber towels
- Ear cleaners
- Flea prevention products
- Air purifiers for dogs with allergies
When Should You Contact Your Veterinarian?
Schedule a veterinary appointment if your dog develops:
- Persistent dandruff
- Greasy skin
- Strong body odor
- Hair loss
- Red or inflamed skin
- Constant scratching
- Thick crusts
- Recurrent ear infections
- Open sores
- Repeated skin infections
Early diagnosis helps identify underlying diseases before they become more serious.
Final Thoughts
Seborrhea is more than just dandruff—it’s often a sign that something deeper is affecting your dog’s skin health. Whether the problem is caused by allergies, parasites, hormonal disease, infections, or an inherited skin disorder, identifying the underlying cause is the key to long-term success.
Fortunately, today’s veterinary treatments make seborrhea much easier to manage than in the past. With regular grooming, medicated shampoos, proper nutrition, skin-supportive supplements, and consistent veterinary care, many dogs experience dramatic improvements in their skin, coat, and overall comfort.
If your dog develops persistent flakes, greasy fur, a musty odor, or chronic itching, don’t assume it’s simply “dry skin.” A veterinary examination can help determine the cause and get your dog started on the right treatment plan.
Frequently Asked Questions
What is seborrhea in dogs?
Seborrhea is a skin disorder that causes abnormal production of skin cells and natural oils, leading to dandruff, greasy skin, scaling, odor, and sometimes secondary infections.
What causes seborrhea in dogs?
Seborrhea may be caused by allergies, parasites, bacterial or yeast infections, hormonal diseases, poor nutrition, obesity, or inherited skin disorders.
Is seborrhea contagious?
No. Seborrhea itself is not contagious. However, some underlying causes, such as certain parasites, may spread to other animals.
Can seborrhea be cured?
Primary (inherited) seborrhea cannot usually be cured but can often be managed successfully. Secondary seborrhea often improves once the underlying condition is treated.
What is the best shampoo for dogs with seborrhea?
Veterinarians often recommend medicated shampoos containing ingredients such as chlorhexidine, miconazole, benzoyl peroxide, sulfur, salicylic acid, ceramides, or oatmeal, depending on your dog’s specific condition.
Is fish oil good for dogs with seborrhea?
Yes. Omega-3 fatty acids may help support skin barrier health, reduce inflammation, improve coat quality, and promote healthier skin over time.
Can allergies cause seborrhea?
Absolutely. Environmental and food allergies are among the most common causes of secondary seborrhea in dogs.
How often should I bathe a dog with seborrhea?
The ideal bathing schedule depends on your dog’s condition and the shampoo being used. Your veterinarian may recommend bathing anywhere from once or twice weekly during flare-ups to every few weeks for maintenance.
Can diet affect seborrhea?
Yes. A balanced diet with high-quality protein and essential fatty acids supports healthy skin. Dogs with food allergies may require specialized diets.
When should I take my dog to the veterinarian?
You should schedule a veterinary appointment if your dog develops persistent dandruff, greasy skin, hair loss, itching, bad odor, recurrent ear infections, or recurring skin infections, as these may indicate seborrhea or another underlying skin condition.
The Snout and About team includes pet owners and animal health professionals with backgrounds in animal science and veterinary medicine and firsthand experience managing serious pet health conditions. Our goal is to make veterinary information accessible and actionable for everyday pet owners.
