Scabs on Dog Nose: What's Causing Them and When to See a Vet

Scabs on a dog's nose often develop because of minor trauma, scarring, or temporary dryness. But if the crusting persists, it may indicate an infection, nose hyperkeratosis, autoimmune disease, or another underlying medical condition.

A dog's nose is sensitive and constantly exposed to all the elements of the environment, such as sun, wind, dry air, dirt, and rough surfaces. This exposure may result in slight irritation, but the appearance alone can't always tell you the cause of a dog's scabby nose.

If your dog's nose is bleeding, painful, fading in color, changing, or getting worse, schedule an appointment with the vet. According to Citron et al. (2025), prolonged or severe symptoms require a medical assessment, as treatment will depend on a proper diagnosis of the underlying cause.

Key Takeaways

• The common causes of scabs on a dog's nose include minor trauma, environmental irritation, infection, hyperkeratosis, autoimmune disease, and other medical disorders.
• A dry nose isn’t always a sign of problems. Sometimes temporary dryness is perfectly normal.
• Loss of the nose's normal pigment or pebbled texture can occur with conditions such as discoid lupus erythematosus.
• Nose hyperkeratosis in dogs is a buildup of keratin that makes the nose surface thick, dry, and crusty.
• Don't apply human products to your dog's nose unless your veterinarian recommends them.
• A small, inconsequential scab that resolves on its own may not require veterinary attention; however, if the scab spreads, bleeds, is painful, or doesn't heal, take your pup to the vet.

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Red Flags: When Scabs on Dog Nose Need Veterinary Attention

An obvious scratch or cut might not need emergency treatment if it is just one scab. Take a picture and observe it to see if it will shrink, spread, or change. Seek veterinary attention immediately if you notice any of the following:

• Severe or widespread crusting.
• Heavy, colored, or blood-tinged runny nose.
• Loss or a lack of usual pebbled texture or normal pigment of the dog’s nose.
• Repeated bleeding, open sores, or ulcers.
• A wound that doesn't heal or keeps coming back.
• Pain upon pressure to the nose.
• Crusting around the eyes, lips, ears, or other parts of the body.
• Accompanying symptoms of lethargy, poor appetite, fever, sore feet, weight loss, vomiting, or diarrhea.

If your dog is systemically ill, has extensive amounts of bleeding, or has lesions that worsen quickly, seek prompt attention. Report to your veterinarian the time of onset and if you observed any other changes about the same time. This information can help narrow treatment options.

Diseases affecting the nasal planum (the hairless surface at the end of the nose) include infectious, immune-mediated, environmental, genetic, cancerous, systemic, and neurological conditions. In some cases, a diagnostic test doesn't distinguish one from the other (Citron et al., 2025). A scabby nose dog may therefore need more than a visual check to identify the underlying health issue.

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What Causes a Scabby Nose in Dogs?

A dog's scabby nose can have many causes. Some affect only the surface of the nose, while others are signs of an underlying medical condition.

Dry Nose and Environmental Factors

A dog's dry nose isn't necessarily unhealthy. Nose moisture naturally changes throughout the day, and a dog may temporarily have a dry nose after sleeping or spending time in warm, dry surroundings.

Environmental factors can cause nasal dryness and irritation. Dry skin is more likely during the winter months, when people are indoors with heating systems, hot weather, weather changes, and wind. During the winter months, when indoor air can be extremely dry, a humidifier can help alleviate the problem.

Dehydration can also cause dryness, so refresh the water throughout the day. Good skin and nose health also come from a well-balanced diet.

Dogs with light-colored or poorly pigmented noses need extra sun protection. Solar dermatitis can cause redness that progresses to crusting or erosion in susceptible dogs. Limit intense sun exposure and ask your veterinarian about a dog-safe sunscreen rather than applying human sunscreen, since some human products aren't suitable for dogs (White, 2024).

Nasal scabbing doesn't necessarily indicate an allergy, but in some dogs, environmental allergies can cause inflammation of the skin on the face. If your dog's nose dryness is paired with itching or inflammation, tell your vet about the other symptoms.

Fungal and Bacterial Infections

Crusting around a dog's nose can result from fungal and bacterial infection, but their location and appearance vary. Inflammation of the muzzle (pyoderma, dermatophytosis, ringworm, and demodicosis) tends to occur more often on the haired portion than on the nasal planum (White, 2024). Bacterial mucocutaneous pyoderma may cause crusty lesions, discharge, and even mild bleeding where the nostrils meet the surrounding skin.

Fungal disease can cause more severe nasal lesions, such as nasal discharge, swelling, and ulceration. Your veterinarian may use cytology, skin scrapings, skin culture, or other diagnostic tests to determine treatment before diagnosing, since these infections can also resemble immune-mediated skin disease.

If testing confirms a bacterial infection, your veterinarian may prescribe an appropriate antibiotic. Drugs such as cephalexin treat some bacterial skin infections, but the choice should depend on the infection, the individual dog, and culture results when indicated. Don't give your dog leftover antibiotics or try to treat nasal lesions without veterinary guidance.

Allergic Reactions and Flea Bites

An environmental allergy may lead to inflamed, itchy skin, especially on the face, paws, ears, and other parts of the body that are typically affected. If your dog rubs or scratches their skin repeatedly, it can form secondary scabs.

Food allergies can also trigger skin disease, but a scabby nose doesn’t necessarily indicate a food allergy. If your dog has persistent skin issues and gastrointestinal symptoms, our guide to signs your dog has gut issues explains common gastrointestinal symptoms to watch for.

Typically, flea allergy dermatitis affects the lower back, tail base, and thighs, and doesn't appear primarily as nasal scabs. Still, using a suitable flea and tick preventative method once a month can help prevent parasite-related skin problems. Ask the veterinarian which preventative method or products are suitable for your dog.

Zinc-Responsive Dermatosis and Other Less Common Causes

In zinc-responsive dermatosis, there may be crusting and changes around the mucocutaneous areas, including the muzzle. Northern breeds like Siberian Huskies and Alaskan Malamutes have a known genetic predisposition. These dogs normally have a problem involving abnormal zinc absorption, not a poorly balanced diet (Kleszynski, 2025).

If a veterinarian confirms zinc-responsive dermatosis, they can prescribe zinc as an oral supplement. Therefore, don’t start on a high-dose zinc regimen without the veterinarian's advice. A skin biopsy might be necessary for a diagnosis, and excessive supplementation can cause problems.

Other systemic diseases can also affect the nose. For example, canine distemper can cause hyperkeratosis of the nasal planum and footpads in infected dogs, usually alongside other signs of illness. Superficial necrolytic dermatitis, also called hepatocutaneous syndrome, is a rare disorder associated most often with severe liver disease and, less commonly, glucagon-secreting tumors. It can cause crusting and ulceration on the nose, footpads, and other areas.

Trauma and Self-Inflicted Wounds

Some scabs may result from minor trauma. Dogs use their noses as their main sense organ, and the digging, rubbing around a crate, and rough pushing against brush or rough surfaces can rip up the skin.

An injury should heal over time unless it's quite small. Don’t allow your dog to scratch or rub the area again, as this will keep the wound open, slow healing, and increase the risk of secondary infection.

Don't assume that if the scabbing is recurring, or it didn't get better from the trauma, the trauma is the root cause. If scabbing continues, please consult a veterinarian.

Dog Nose Hyperkeratosis: When Excess Keratin Builds Up

Dogs develop nose hyperkeratosis when excessive keratin accumulates on the nasal planum. Keratin is a component of the skin's outermost barrier layer, but when the production is excessive, the skin appears thick, rough, and crusty.

The nose may not look dry; instead, it may have solid projections or extra nose tissue that resembles fronds. Nasal hyperkeratosis is sometimes seen in older dogs, but can be inherited in younger ones. Research has also found nasal hyperkeratosis frequently in brachycephalic breeds (Cikota et al., 2021).

A 2021 Swedish study of 107 Griffons and 493 control dogs found nasal hyperkeratosis in 31.8% of Griffons compared with 10.2% of non-brachycephalic control dogs. Roughly one-fifth (21.7%) of the brachycephalic dogs in the control group were affected (Cikota et al., 2021). English Bulldogs, French Bulldogs, Pugs, Boxers, Doberman Pinschers, and Cocker Spaniels also appear among affected breeds (Perry et al., 2024).

Mild cases cause only slight discomfort. However, severe hyperkeratosis can lead to fissures and secondary infections. Canine distemper can also cause nose and footpad hyperkeratosis, so sudden thickening in a sick or inadequately vaccinated dog requires veterinary attention.

Pet-safe moisturizers or emollients can soften accumulated keratin and alleviate dryness. In severe cases, a veterinarian may need to trim excess keratin carefully. Don't cut it yourself because removing too much can cause pain, bleeding, and infection.

For older dogs, our senior dog supplements collection may fit into a broader wellness routine. However, supplements don't treat nasal hyperkeratosis and shouldn't replace veterinary care.

Autoimmune Diseases Behind Nose Scabs

Crusting, erosions, ulcers, bleeding, and pigment changes in the nasal planum are associated with some autoimmune diseases. These symptoms are less common than minor irritation but can also be associated with other nasal skin diseases (White, 2024).

The treatment usually involves suppressing an abnormal immune response, so a veterinarian will need to diagnose your pup before prescribing treatment.

Discoid Lupus Erythematosus, or Collie Nose

Discoid lupus erythematosus (DLE) is an immune-mediated skin condition that commonly affects the nose. Other breeds of dogs can develop it, but Collies, Shetland Sheepdogs, German Shepherds, and German Shorthaired Pointers are more susceptible (Eldredge, 2026).

DLE typically leads to the loss of pigment, redness, crusting, erosions, and ulcers. Sunlight can worsen lesions, and affected dogs may show more severe clinical signs during the sunniest months of the year (Weir et al., 2025).

A change in texture is a very helpful hint. DLE can make the normal cobbled or pebbled texture of the nasal planum disappear, making it smoother (Weir et al., 2025). By contrast, hyperkeratosis deposits thickened keratin on the surface.

Lesions can also affect other parts of the body, such as around the eyes, lips, and ears. However, appearance can't confirm DLE. A skin biopsy is typically the method used to make a diagnosis. Dogs diagnosed with DLE may need topical or systemic medications, and careful management of time spent outside in the sun.

Pemphigus Foliaceus on the Nose and Muzzle

Another autoimmune skin condition that affects the muzzle, nasal planum, around the eyes, ears, trunk, and feet is Pemphigus foliaceus. You may notice crusting instead of intact blisters because fragile pustules tend to break easily (Almela & Chan, 2021).

Some affected dogs develop accompanying symptoms such as lethargy, fever, poor appetite, weight loss, or pain. A dry nose accompanied by systemic illness therefore warrants professional evaluation rather than home treatment.

Some dogs also experience other symptoms like lethargy, fever, lack of appetite, weight loss, or pain. Don't treat a dry nose accompanied by systemic illness at home. Take your dog to the vet for a professional evaluation.

Veterinarians often perform a cytology and skin biopsy to differentiate pemphigus from infection and other diseases. That distinction is important since there are significant differences in treatments.

Skin Cancer on the Nose and Why Non-Healing Scabs Matter

Persistent non-healing nasal lesions are also less common and are caused by cancer. Squamous cell carcinoma can occur on the nasal planum and may cause non-healing ulcers, bleeding, crusting, or worsening tissue damage.

An inter-institutional study identified 89 dogs with squamous cell carcinoma of the nasal planum. The most frequently presenting complaint was a visible nasal mass in 89% of the cases (Raleigh et al., 2025). Researchers reported that local treatment could provide favorable long-term health outcomes for some dogs.

Don't assume that all non-healing scabs are cancer. If the lesion persists for weeks, keeps coming back in the same spot, enlarges, bleeds, or ulcerates, however, seek immediate veterinary attention. A veterinarian can help you determine the underlying cause through a biopsy.

How Vets Diagnose the Underlying Cause of Nose Scabs

Treatment of the nasal scabs will depend on the exact cause of the scabs. Your veterinarian will typically take your dog's history and conduct a physical exam, noting the location, pattern, texture, pigment, and extent of lesions.

Based on the results, diagnostic testing might involve:

• Skin scrapings to look for mites.
• Cytology is the study of cells, bacteria, or yeast.
• Bacterial or fungal cultures if infection is suspected
• Laboratory tests of blood and urine if a medical problem or general illness is suspected.
• Additional tests are ordered if infectious disease or metabolic disease is suspected.
• Skin biopsy for the evaluation of suspected autoimmune disease, cancer, or when histopathology is needed for another diagnosis.

Even a veterinary visit doesn't always lead to an immediate diagnosis. Your veterinarian might start with less invasive tests and move to biopsy or further testing if the initial tests don't explain the underlying cause of the lesions (Kleszynski, 2025).

How to Support Your Dog's Dry, Crusty Nose at Home

Home care may help minor scratches or dryness heal, but don't use it to delay seeking medical attention for persistent or severe symptoms.

If your dog has mild nose dryness, clean it with a soft, damp cloth to remove the surface dirt. Avoid scrubbing, peeling crusts, or picking at scabs. A veterinarian-approved, pet-safe moisturizer can help soften a cracked dog nose or light crusty buildup.

Keep fresh water available and use a humidifier if indoor air becomes dry during the winter months. Limiting strong sun exposure also helps protect dogs with light-colored noses. Ask your veterinarian for a dog-safe sunscreen if your dog needs extra UV protection.

Don’t use any human products unless directed by your veterinarian. Ingredients in human products such as lip balms, sun protection, topical medications, antibiotic ointments, and essential oils may not be suitable for a dog that licks its nose.

For the health of the skin and the nose as well, good preventive care is important. Give your dog a complete, balanced diet and maintain vet-recommended parasite prevention. Don't give them zinc or other nutritional supplements just because the nose looks dry or crusty.

The study of the dog "gut-skin axis" is ongoing. A 2025 systematic review of five clinical trials with 63 dogs with atopic dermatitis found reduced itch and skin-severity scores in trials that added probiotics to standard treatment, but the pooled effect didn't reach statistical significance. The researchers recommended larger trials (Pacheco et al., 2025).

Therefore, you can use probiotic supplements for dogs to support your pup's overall wellness, but they can't treat nasal scabs, bacterial infections, autoimmune diseases, or hyperkeratosis.

Our guide on how to improve gut health in dogs goes in depth on diet and digestive support. Always consult your veterinarian before giving your dog a new supplement, especially if they're already on a medication or have another health condition.

Most importantly, a moist nose doesn't prove your dog's health is perfect, and a temporarily dry nose can be perfectly normal. Changes that persist, spread, bleed, ulcerate, cause pain, or occur alongside additional symptoms are the signs that warrant veterinary care.

Frequently Asked Questions

Will Scabs on My Dog's Nose Heal on Their Own?

If your dog doesn't run or scratch the affected area, a small scab from a scrape or temporary dryness could heal on its own. But non-healing, recurring, or spreading scabs may indicate infection, hyperkeratosis, or some autoimmune disorders. Note when the symptoms began, and if the area doesn't heal or worsens, contact your veterinarian.

Is Ringworm on a Dog's Nose Contagious to People or Other Pets?

Yes. Ringworm is a fungal infection that can spread between dogs, other animals, and people through direct contact or contaminated objects. It commonly causes scaly, crusty areas and hair loss, usually on the haired skin around the nose but not the nose planum. Seek veterinary care if you think your dog may have ringworm for testing and treatment.

What Dog Breeds Are Most Prone to a Crusty Nose?

The risk depends on the cause. Some dog breeds have a genetic predisposition to nasal skin conditions. Labrador Retrievers can develop hereditary nasal parakeratosis, while Siberian Huskies and Alaskan Malamutes are prone to zinc-responsive dermatosis. Discoid lupus also occurs more often in breeds such as Collies, Shetland Sheepdogs, and German Shepherds. Senior dogs may also develop age-related nasal hyperkeratosis.

Can I Put Coconut Oil on My Dog's Scabby Nose?

You can apply a small amount of plain coconut oil to a dry nose to temporarily lubricate the area, but this won't help with infections, hyperkeratosis, or autoimmune issues. For simple dryness, use a dog-safe nose balm. If you notice bleeding, open sores, pigment changes, or excessive tissue, don't treat it at home; seek veterinary care instead.

Ending Note

Scabs on a dog's nose often come from minor injuries, environmental triggers, or other illnesses, including fungal infections, hyperkeratosis, and some autoimmune diseases. A small scab that heals steadily may only need gentle home care. However, persistent crusting, bleeding, open sores, nasal discharge, or changes in your dog's overall health warrant a veterinary visit.

Treatment is based on the cause. For instance, zinc supplementation is a good treatment for a dermatosis proven to be zinc-responsive, whereas other dermatoses require a different approach. If you're having trouble with a non-healing nose lesion, take your dog to a veterinarian who can determine the cause instead of repeatedly treating the surface.

References

• Almela, R. M., & Chan, T. (2021). Review of pemphigus foliaceus in dogs and cats. Today's Veterinary Practice.
• Cikota, R., Aberg, L., Karlstam, E., Shokrai, A., & Ahman, S. (2021). Nasal hyperkeratosis in Griffon breeds: Clinical, histopathological features and the prevalence in the Swedish population compared to a control group and other brachycephalic breeds. Veterinary Record Open, 8(1), e10.
• Citron, L., Brame, B. E., & Bradley, C. (2025). Nasal planum dermatoses of the dog: Clinical presentations and diagnostic approach. Veterinary Clinics of North America: Small Animal Practice, 55(2), 299-320.
• Eldredge, D. M. (2026). Discoid lupus in dogs. Whole Dog Journal.
• Kleszynski, B. (2025). Nasal dermatoses in dogs: What are they and how are they diagnosed? PetMD.
• Pacheco, R. C. F., Lins, L. F., de Brito, L. P., et al. (2025). Probiotics as an adjunct in the treatment of canine atopic dermatitis: A systematic review and meta-analysis of in vivo studies in dogs. Journal of Veterinary Medical Science, 87(9), 1068-1077.
• Perry, S., Levandowski, C., & Irish, E. (2024). Dog nose hyperkeratosis. BetterPet.
• Raleigh, J. S., Culp, W. T. N., Giuffrida, M. A., et al. (2025). Outcomes associated with local treatment of nasal planum squamous cell carcinoma in dogs: 89 cases (2003-2020). Journal of the American Veterinary Medical Association, 263(4), 1-8.
• Weir, M., Williams, K., & Barnette, C. (2025). Discoid (cutaneous) lupus erythematosus. VCA Animal Hospitals.
• White, S. D. (2024). Nasal dermatoses in dogs. Merck Veterinary Manual.