Hyperkeratosis on a French Bulldog's paw pads is a buildup of keratin, the same tough protein that makes up her nails, that sticks to the pad instead of wearing off. The pads turn thick, dry and crusty, and in bad cases they crack. When it shows up on its own it cannot be cured, but it can be managed well with softening, vet-picked topicals and regular upkeep.
A Frenchie mom told us this week that her girl had just been diagnosed with it, and she wasn't sure what would help. So here's the plain version.
What does paw pad hyperkeratosis look like?
It looks like the pad is growing a crust. The University of Minnesota's open veterinary dermatology textbook describes it as "tightly adherent thick accumulations of keratin" on the footpads, the nose, or both.
- The pad feels hard and rough instead of smooth and leathery.
- Extra keratin can stick out from the edges of the pad like tiny horns or a crusty fringe.
- The skin is usually very dry, and cracks and fissures can form over time.
- It usually involves the pads on all four paws.
Mild cases are mostly a cosmetic thing. Severe ones are not. That same textbook says severe footpad involvement causes pain and lameness.
What causes hyperkeratosis on a dog's paws?
There are three buckets, and which one she is in changes everything about the plan.
- No known cause (vets call it idiopathic). It is seen "typically in older dogs, probably as a senile change," and any breed can get it. Older dogs who walk differently because of arthritis can also build up keratin on the part of the pad that no longer touches the floor.
- Inherited. The Merck Veterinary Manual lists familial footpad hyperkeratosis in Irish Terriers and Dogues de Bordeaux, and the Minnesota textbook adds Kromfohrländers and Rottweilers. It usually shows up by 12 months of age. Researchers at the University of Bern traced the Irish Terrier and Kromfohrländer form to a single gene variant (Drögemüller et al., 2014).
- A sign of something else. The textbook's list of look-alikes includes canine distemper, pemphigus foliaceus (an autoimmune skin disease), drug reactions, zinc-responsive dermatosis and superficial necrolytic dermatitis.
Are French Bulldogs prone to hyperkeratosis?
French Bulldogs are not on either of those inherited lists. A lot of pet sites say Frenchies are genetically prone to paw pad hyperkeratosis, but the two vet references we opened for this post do not name the breed.
The Frenchie research that does exist is about ears. In a study published in Veterinary Dermatology, dermatologists described 16 French Bulldogs with crusty, thickened ear flaps that looked like zinc-responsive dermatosis (Dubin et al., 2026). Twelve of them were given oral zinc, and eight improved or cleared up. The authors concluded Frenchies "may be predisposed" to that ear version.
That is ears, though, and it is 16 dogs. It is a good reason to mention crusty ear edges to your vet if she has them too. It is not a reason to start zinc on your own for a paw problem.
How does a vet diagnose it?
By her age and by what else is going on. In a middle-aged or older dog with crusty pads and no other signs, the look alone is usually enough for a diagnosis.
A young dog is different. If it starts early in life, or if anything else is off (skin trouble elsewhere, low energy, not eating), the textbook says a thorough workup is needed, and that a biopsy should be considered. So if your Frenchie is young and nobody has mentioned a biopsy, it is a fair question to ask.
Can paw pad hyperkeratosis be cured?
No, not when it shows up on its own. The textbook puts it flat: "The disease is non-curable and treatment is symptomatic." Her pads keep making keratin, so the upkeep keeps going too.
The exception is the third bucket. If the crust is a sign of something else, the plan is to treat that something else, which is why the diagnosis matters more than the balm.
How do you treat hyperkeratosis on a Frenchie's paws?
You soften it, take off the extra, and keep it moisturized. This is the routine the references describe, and your vet sets the details.
- Mild and not bothering her? It may not need treatment at all.
- Soften first. Hydrating the pads with water or a wet dressing makes the extra keratin easier to remove.
- Keratolytic gel. These are topicals that loosen keratin, with ingredients like salicylic acid, lactic acid and urea. The textbook describes applying one every 12 hours at the start, then as needed to keep things under control.
- Keep it moisturized. Ongoing use of something like petroleum jelly, propylene glycol or urea is usually required.
- Cracks need the vet. If fissures are present, topical steroids and antibiotics may be needed for the inflammation and infection that follow.
Two things that are our take and not from a textbook. We'd let the vet do the trimming, or have them show you exactly where the dead keratin ends and the living pad begins. And we'd ask which product is safe for a dog who licks her feet, because whatever goes on a paw ends up in a mouth. (If the licking is constant, our post on why dogs lick their paws so much covers the usual reasons.)
Want a checklist for itchy skin and paws?
Drop your email and we'll send the one-page Frenchie Itch-Relief Checklist. The habits that help keep skin and paws calm, in the order that matters.
FAQ
Is paw pad hyperkeratosis painful for dogs?
It can be. Mild thickening may not bother her at all. Once the pads crack, it hurts, and Merck notes that horns, fissures and secondary infection cause pain and lameness. Limping, licking or not wanting to walk on hard floors means it is time for the vet.
Can hyperkeratosis show up on a Frenchie's nose too?
Yes. The same keratin buildup can happen on the nose, the footpads, or both. On the nose it covers up the normal cobblestone texture with a dry crust.
Is hyperkeratosis contagious?
The condition itself is a keratin problem, not a germ. One of its possible causes, canine distemper, is a contagious virus, and Merck says dogs that survive it may have hyperkeratosis of the footpads and nose. That's one more reason to keep her vaccines current.
Is it the same thing as a skin fold infection?
No. Fold trouble is about moisture and germs trapped in a wrinkle, and the fix is cleaning and drying. We wrote up that routine in our skin fold post.
What we'd use
For the pads themselves, whatever keratolytic and moisturizer your vet picks. Neither of our jars treats hyperkeratosis, and we won't pretend otherwise. Frenchies vs Mushrooms is a daily topper made to support immune health, which is a different job from softening a crusty pad. Give those paws a gentle squeeze from us, gremlin permitting.