Hot spots, mystery patches, and the skin changes dog parents shouldn't ignore.
You ever pet a dog and feel something that makes you stop mid-scratch?
A rough patch. A little scab. Some missing fur. Maybe an area that feels dry, crusty, or just different from the rest of their coat.
And when you ask about it, somebody says, “Oh, that's just dry skin.”
Maybe it is.
But sometimes, what looks like a little dryness on the surface is your dog's way of telling you something else is going on.
Welcome back to Skin + Coat Studies, where we're getting into the things dog parents should know but don't always know to ask.
First things first: Not every skin problem is dry skin.
Dogs can develop skin changes for all kinds of reasons. Some are relatively minor. Others need veterinary treatment.
And here's where things get tricky: different conditions can look surprisingly similar.
A flaky patch could be simple dryness, but flaking can also occur with parasites, allergies, or infections. Redness might come from friction or irritation, but it can also be associated with inflammation or infection.
That's why the goal isn't to become your dog's dermatologist overnight.
It's to recognize when something has changed and know what to do next.
Let's talk about hot spots.
A hot spot is an area of inflamed skin, often caused or worsened by repeated licking, chewing, or scratching.
The medical term is acute moist dermatitis, sometimes called pyotraumatic dermatitis.
Hot spots often appear:
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Red, irritated, and painful
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Moist or oozing
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Warm to the touch
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Associated with matted or missing fur
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Suddenly larger than they were a day or two earlier
They can develop quickly, particularly when moisture, itching, or irritation creates a cycle of scratching and further skin damage.
But here's something worth remembering:
A dry, crusty patch isn't automatically a hot spot.
Some lesions become crusted as they change or heal, while other skin conditions may look dry from the beginning. Appearance alone isn't enough to identify the cause.
The skin concerns every dog parent should recognize
01. Flakes and dry-looking skin
A little flaking might seem harmless, but persistent flakes can have several explanations.
Environmental dryness, grooming-product irritation, parasites, infections, and other skin conditions may all contribute.
What to do: Notice whether your dog is also itchy, red, losing hair, or developing an unusual odor. If flaking persists or comes with other symptoms, arrange a veterinary examination rather than repeatedly applying products.
02. Hot spots and irritated patches
These can be especially uncomfortable because licking and scratching may make the irritation worse.
What to do: Contact your veterinarian promptly if you suspect a hot spot. Prevent licking or chewing with an appropriately fitted recovery collar if needed, and avoid putting random creams or household remedies on the area.
A painful, spreading, or oozing lesion shouldn't be treated as a routine grooming problem.
03. Bald spots and thinning fur
Dogs can lose fur because of friction, excessive licking, parasites, infection, allergies, or other health conditions.
Some dogs also experience seasonal shedding, but shedding and localized bald patches aren't necessarily the same thing.
What to do: Take a clear picture and note where the hair loss began. A new bald patch, especially with redness, itching, or scaling, warrants veterinary advice.
04. Redness, bumps, and scabs
These changes can occur with irritation, bites, allergic reactions, infections, and other skin problems.
What to do: Avoid picking scabs or squeezing bumps. Watch for changes in size, number, tenderness, or discharge, and have persistent or worsening lesions evaluated.
05. That smell that won't go away
Dogs have their own natural scent, but a new, strong, unpleasant odor from the skin or ears can sometimes accompany infection or inflammation.
What to do: Don't assume another bath will solve it. If the smell is persistent, particularly with greasy skin, redness, discharge, or itching, contact your veterinarian.
A special note about dogs with skin folds
Bulldogs, Pugs, Shar-Peis, and other dogs with pronounced skin folds may be more prone to irritation where skin rubs together or traps moisture.
That doesn't mean every wrinkly dog will develop problems.
It means those folds deserve attention.
During routine care, gently check for redness, odor, discharge, or tenderness. Follow your veterinarian's recommendations for cleaning and drying the folds, since excessive cleaning or unsuitable products can make irritation worse.
The goal is comfortable, healthy skin—not scrubbing every wrinkle until it's squeaky clean.
Why does the same patch keep coming back?
This is the part I really want dog parents to understand.
Sometimes a patch appears to improve, only to return weeks later.
That doesn't necessarily mean the underlying problem went away.
Recurring irritation may be associated with issues such as allergies, parasites, repeated licking, skin-fold problems, or infections.
A veterinarian may need to examine the skin and perform tests to determine what's causing repeated flare-ups.
If it keeps coming back, don't just keep treating what you can see. Find out why it's happening.
The Sunday Skin Check
A little homework. A lot of love.
You don't need special equipment to pay attention to your dog's skin.
During a calm moment each week, spend a few minutes getting familiar with what is normal for your pup.
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Look: Part the fur gently and check for redness, flakes, scabs, bumps, or unusual patches.
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Feel: Notice new rough areas, lumps, matting, or tender spots without pressing on painful skin.
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Check the hidden places: Look around the paws, belly, ears, armpits, and skin folds.
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Watch their behavior: Persistent licking, scratching, rubbing, or chewing can be clues that something is bothering them.
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Keep track: Photograph unusual changes and note when they started, whether they spread, and whether your dog seems uncomfortable.
This is an observation routine, not a way to diagnose a skin condition.
What should you actually do when you notice something?
Start with the basics.
Don't panic, but don't ignore it either.
Take a photograph. Note the location and whether the area is changing. Prevent excessive licking or scratching when safely possible.
Avoid using hydrogen peroxide, rubbing alcohol, essential oils, human medicated creams, or other home remedies on an unexplained lesion unless your veterinarian specifically recommends them.
And don't attempt to cut matted fur away from irritated skin with scissors. Dog skin can be surprisingly easy to injure.
For a painful, rapidly spreading, oozing, swollen, foul-smelling, or repeatedly recurring patch, contact your veterinarian promptly.
Routine grooming products are not substitutes for medical treatment.
But can grooming help maintain healthy skin?
Absolutely—when it's appropriate for your individual dog.
Regular coat care can help you notice changes early, remove loose hair, prevent some matting, and keep your dog's coat manageable.
The right approach depends on coat type, skin sensitivity, lifestyle, and any veterinary recommendations.
A dog with an active skin condition may need a different grooming routine or prescribed products until the problem is addressed.
That's why understanding your dog's skin matters just as much as understanding their coat.
A few questions from the classroom
Can a dog have dry skin without having an infection?
Yes. But dryness and flaking can have multiple causes, so persistent symptoms or accompanying redness, itching, odor, or hair loss should be checked.
Can hot spots go away on their own?
Some irritated areas may appear to improve, but suspected hot spots can worsen quickly and often need veterinary care. Don't rely on waiting, especially if the area is painful, moist, or spreading.
Should I put coconut oil or balm on a suspicious patch?
Not without knowing what you're treating. Oils and balms aren't appropriate for every skin condition and may interfere with needed care.
Are recurring skin problems normal for certain breeds?
Some breeds are predisposed to particular skin conditions, but repeated flare-ups shouldn't automatically be accepted as normal. A veterinarian can help identify the cause and create a management plan.
The Sunday Pup takeaway
A little dryness might be just that.
But a patch that keeps returning, an itch that never seems to stop, or a spot that suddenly looks different deserves attention.
You don't have to know every skin condition by name.
You just have to know your dog well enough to recognize when something isn't right.
Because sometimes the best thing you can do for your pup isn't another product or another bath.
It's paying attention.
Class dismissed. Stay curious, dog parents.
Educational note: This article provides general pet-care information and is not a veterinary diagnosis or treatment plan. Consult your veterinarian about concerning skin changes or symptoms.
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